Price


Category

Price

Ethical type

Merchant

Ethical product

Brand

Condition

Miele Classic C1 Flex Cylinder Vacuum Cleaner - White

Miele Classic C1 Flex Cylinder Vacuum Cleaner - White

169.00£
 Shipping 0.00£

Geraldgiles.co.uk

Miele Classic C1 Flex Vacuum Cleaner, Lotus White - Lotus White - Unisex

Miele Classic C1 Flex Vacuum Cleaner, Lotus White - Lotus White - Unisex

169.00£
 Shipping 0.00£

Johnlewis.com

Miele C1 FLEX Cylinder Vacuum Cleaner - WHITE

Miele C1 FLEX Cylinder Vacuum Cleaner - WHITE

169.00£
 Shipping 0.00£

Appliancecity.co.uk

Miele C3 ALLERGY Cylinder Vacuum Cleaner - WHITE

Miele C3 ALLERGY Cylinder Vacuum Cleaner - WHITE

329.00£
 Shipping 0.00£

Appliancecity.co.uk

Miele Complete C3 Allergy Cylinder Vacuum Cleaner - Lotus White

Miele Complete C3 Allergy Cylinder Vacuum Cleaner - Lotus White

329.00£
 Shipping 0.00£

Geraldgiles.co.uk

Vhbw - 2x Pre-Motor Filter compatible with Vax C89, C89-MA-B, Air Total Home Cylinder Cleaner, C88 Vacuum Cleaner - Motor Protection Filter

Vhbw - 2x Pre-Motor Filter compatible with Vax C89, C89-MA-B, Air Total Home Cylinder Cleaner, C88 Vacuum Cleaner - Motor Protection Filter

11.17£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 3x Pre-Motor Filter compatible with Vax C89, C89-MA-B, Air Total Home Cylinder Cleaner, C88 Vacuum Cleaner - Motor Protection Filter

Vhbw - 3x Pre-Motor Filter compatible with Vax C89, C89-MA-B, Air Total Home Cylinder Cleaner, C88 Vacuum Cleaner - Motor Protection Filter

14.60£
 Shipping 8.90£

Manomano.co.uk

vhbw 50x Vacuum Cleaner Bag compatible with Sebo 470 Electronic, Air belt C, Airbelt C 2.1 Vacuum Cleaner - Paper, 23.5 cm x 15.5 cm Sand-Coloured

vhbw 50x Vacuum Cleaner Bag compatible with Sebo 470 Electronic, Air belt C, Airbelt C 2.1 Vacuum Cleaner - Paper, 23.5 cm x 15.5 cm Sand-Coloured

34.37£
 Shipping 8.90£

Manomano.co.uk

20x Vacuum Cleaner Bag compatible with Sebo 470 Electronic, Air belt c, Airbelt c 2.1 Vacuum Cleaner - Paper, 23.5 cm x 15.5 cm Sand-Coloured - Vhbw

20x Vacuum Cleaner Bag compatible with Sebo 470 Electronic, Air belt c, Airbelt c 2.1 Vacuum Cleaner - Paper, 23.5 cm x 15.5 cm Sand-Coloured - Vhbw

17.18£
 Shipping 8.90£

Manomano.co.uk

Miele Complete C3 Allergy Vacuum Cleaner, Lotus White - Lotus White - Unisex

Miele Complete C3 Allergy Vacuum Cleaner, Lotus White - Lotus White - Unisex

339.00£
 Shipping 0.00£

Johnlewis.com

Xiaomi Home Mite Remover for Bed Sofa,Handheld Wireless Vacuum Cleaner,10000Pa Patting UV-c Sterilizer Eliminate Mites Duster Pet Hair

Xiaomi Home Mite Remover for Bed Sofa,Handheld Wireless Vacuum Cleaner,10000Pa Patting UV-c Sterilizer Eliminate Mites Duster Pet Hair

44.00£
 Shipping 0.00£

Joom.com

Miele Complete C3 Allergy Vacuum Cleaner - Lotus White

Miele Complete C3 Allergy Vacuum Cleaner - Lotus White

329.00£
 Shipping 0.00£

Petertyson.co.uk

JanYi HEPA Air Purifiers for Home with Sponge UV Light Pet Hair Dander Smoke Dust Airborne Contaminants Odors Home Air Cleaner with Filter

JanYi HEPA Air Purifiers for Home with Sponge UV Light Pet Hair Dander Smoke Dust Airborne Contaminants Odors Home Air Cleaner with Filter

12.12£
 Shipping 0.00£

Joom.com

A MIJIA Home Home Mite Remover for Bed Sofa,Handheld Wireless Vacuum Cleaner,10000Pa Patting UV-c Sterilizer Eliminate Mites Duster Pet Hair

A MIJIA Home Home Mite Remover for Bed Sofa,Handheld Wireless Vacuum Cleaner,10000Pa Patting UV-c Sterilizer Eliminate Mites Duster Pet Hair

44.40£
 Shipping 0.00£

Joom.com

20x Vacuum Cleaner Bag compatible with Festo / Festool Cleantec ct Mini, ctl Midi, fis-ctl Mini, ctl Mini Vacuum Cleaner, Microfleece, White - Vhbw

20x Vacuum Cleaner Bag compatible with Festo / Festool Cleantec ct Mini, ctl Midi, fis-ctl Mini, ctl Mini Vacuum Cleaner, Microfleece, White - Vhbw

30.51£
 Shipping 8.90£

Manomano.co.uk

5x Vacuum Cleaner Bag compatible with Tornado 800, Aqualine 852, Aqualine 872, Midi Jet Plus, Multy Jet Plus Vacuum Cleaner -microfleece, White - Vhbw

5x Vacuum Cleaner Bag compatible with Tornado 800, Aqualine 852, Aqualine 872, Midi Jet Plus, Multy Jet Plus Vacuum Cleaner -microfleece, White - Vhbw

11.85£
 Shipping 8.90£

Manomano.co.uk

Leitz Replacement UV-C Lamp for Leitz TruSens Z-1000 Small Air Purifier 2415105

Leitz Replacement UV-C Lamp for Leitz TruSens Z-1000 Small Air Purifier 2415105

14.68£
 Shipping 2.85£

Officemonster.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6140 Air Max, 6141 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6140 Air Max, 6141 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6100 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White

Vhbw - 10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6100 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White

15.12£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 20x Vacuum Cleaner Bag compatible with Electrolux Air Max zam 6100 - zam 6199 Vacuum Cleaner - Microfleece, 17.1 cm x 27.8 cm White

Vhbw - 20x Vacuum Cleaner Bag compatible with Electrolux Air Max zam 6100 - zam 6199 Vacuum Cleaner - Microfleece, 17.1 cm x 27.8 cm White

21.48£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6107 Air Max, aam 6108 Air Max, aam 6112 Air Max, aam 6113 Air Max - White

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6107 Air Max, aam 6108 Air Max, aam 6112 Air Max, aam 6113 Air Max - White

15.46£
 Shipping 8.90£

Manomano.co.uk

vhbw 20x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6127 Air Max, AAM 6128 Air Max, AAM 6129 Air Max, AAM 6130 Air Max - White

vhbw 20x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6127 Air Max, AAM 6128 Air Max, AAM 6129 Air Max, AAM 6130 Air Max - White

15.46£
 Shipping 8.90£

Manomano.co.uk

50x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6107 Air Max, aam 6108 Air Max, aam 6112 Air Max, aam 6113 Air Max - White - Vhbw

50x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6107 Air Max, aam 6108 Air Max, aam 6112 Air Max, aam 6113 Air Max - White - Vhbw

37.81£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6114 Air Max, aam 6115 Air Max, aam 6115 Garfield, aam 6116 - White

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6114 Air Max, aam 6115 Air Max, aam 6115 Garfield, aam 6116 - White

15.46£
 Shipping 8.90£

Manomano.co.uk

vhbw 50x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6143 Air Max, AAM 6144 Air Max, AAM 6144 N Air Max, AAM 6145 Air Max - White

vhbw 50x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6143 Air Max, AAM 6144 Air Max, AAM 6144 N Air Max, AAM 6145 Air Max - White

37.81£
 Shipping 8.90£

Manomano.co.uk

50x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6100 - 6160 AirMax, aam 6100 Air Max, aam 6101 Air Max, aam 6102 Air Max - White - Vhbw

50x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6100 - 6160 AirMax, aam 6100 Air Max, aam 6101 Air Max, aam 6102 Air Max - White - Vhbw

37.81£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6124 Air Max, aam 6124 n Air Max, aam 6125 Air Max, aam 6126 Air Max - White

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6124 Air Max, aam 6124 n Air Max, aam 6125 Air Max, aam 6126 Air Max - White

24.92£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta RH8021WB, RH8037WA, RH8055WA Vacuum Cleaner - Air Filter Black White

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta RH8021WB, RH8037WA, RH8055WA Vacuum Cleaner - Air Filter Black White

12.02£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta RO3995EA Vacuum Cleaner - Air Filter Black White

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta RO3995EA Vacuum Cleaner - Air Filter Black White

12.02£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta RO3753EA, RO3786EA, RO3798EA, RO3759EA Vacuum Cleaner - Air Filter Black White

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta RO3753EA, RO3786EA, RO3798EA, RO3759EA Vacuum Cleaner - Air Filter Black White

12.02£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 5x Vacuum Cleaner Bag compatible with Tornado Plein Air 700, s 47 / S47, to 505 / TO505, to 605 / TO605 Vacuum Cleaner -microfleece, White

Vhbw - 5x Vacuum Cleaner Bag compatible with Tornado Plein Air 700, s 47 / S47, to 505 / TO505, to 605 / TO605 Vacuum Cleaner -microfleece, White

11.85£
 Shipping 8.90£

Manomano.co.uk

vhbw 2x Micro Hygiene Filter compatible with Rowenta Swift Power Cyclonic RO2957, RO2957EA, RO2981 Vacuum Cleaner - Air Filter White

vhbw 2x Micro Hygiene Filter compatible with Rowenta Swift Power Cyclonic RO2957, RO2957EA, RO2981 Vacuum Cleaner - Air Filter White

15.46£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta Swift Power Cyclonic RO2932EA, RO2933, RO2933EA Vacuum Cleaner - Air Filter White

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta Swift Power Cyclonic RO2932EA, RO2933, RO2933EA Vacuum Cleaner - Air Filter White

15.46£
 Shipping 8.90£

Manomano.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6119 Air Max, 6120 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6119 Air Max, 6120 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6117 Air Max, 6118 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6117 Air Max, 6118 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6105 Air Max, 6106 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6105 Air Max, 6106 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6133 Air Max, aam 6140 Air Max, aam 6141 Air Max, aam 6142 Air Max - White

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6133 Air Max, aam 6140 Air Max, aam 6141 Air Max, aam 6142 Air Max - White

15.46£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6103 Air Max, aam 6104 Air Max, aam 6105 Air Max, aam 6106 Air Max - White

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6103 Air Max, aam 6104 Air Max, aam 6105 Air Max, aam 6106 Air Max - White

15.46£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6143 Air Max, aam 6144 Air Max, aam 6144 n Air Max, aam 6145 Air Max - White

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6143 Air Max, aam 6144 Air Max, aam 6144 n Air Max, aam 6145 Air Max - White

15.46£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6146 Air Max, aam 6147 Air Max, aam 6148 Air Max, aam 6149 Air Max - White

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6146 Air Max, aam 6147 Air Max, aam 6148 Air Max, aam 6149 Air Max - White

24.92£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6150 Air Max, aam 6200 Air Max Öko, aam 6200 Öko - AirMax - White

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6150 Air Max, aam 6200 Air Max Öko, aam 6200 Öko - AirMax - White

24.92£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6133 Air Max, aam 6140 Air Max, aam 6141 Air Max, aam 6142 Air Max - White

Vhbw - 30x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6133 Air Max, aam 6140 Air Max, aam 6141 Air Max, aam 6142 Air Max - White

24.92£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 50x Vacuum Cleaner Bag compatible with Blue Air bs 1224 Vacuum Cleaner - Microfleece, 30.5 cm x 17 cm, White

Vhbw - 50x Vacuum Cleaner Bag compatible with Blue Air bs 1224 Vacuum Cleaner - Microfleece, 30.5 cm x 17 cm, White

42.97£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 5x Vacuum Cleaner Bag compatible with Simpa 20 l Container, 9650, Clean Star 2000 / 20L, Green Air 20 l Vacuum Cleaner -microfleece, White

Vhbw - 5x Vacuum Cleaner Bag compatible with Simpa 20 l Container, 9650, Clean Star 2000 / 20L, Green Air 20 l Vacuum Cleaner -microfleece, White

11.85£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter Replacement for Rowenta ZR903601 for Vacuum Cleaner - Air Filter Black/Blue White

Vhbw - 2x Micro Hygiene Filter Replacement for Rowenta ZR903601 for Vacuum Cleaner - Air Filter Black/Blue White

17.18£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta Swift Power Cyclonic RO2910, RO2910EA, RO2913 Vacuum Cleaner - Air Filter White

Vhbw - 2x Micro Hygiene Filter compatible with Rowenta Swift Power Cyclonic RO2910, RO2910EA, RO2913 Vacuum Cleaner - Air Filter White

15.46£
 Shipping 8.90£

Manomano.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6124 n Air Max, 6125 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6124 n Air Max, 6125 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 7124 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White

Vhbw - 10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 7124 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White

15.12£
 Shipping 8.90£

Manomano.co.uk

vhbw 10x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6200 Air Max Öko Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White

vhbw 10x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6200 Air Max Öko Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White

15.12£
 Shipping 8.90£

Manomano.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6145 Air Max, 6146 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6145 Air Max, 6146 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6142 Air Max, 6143 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6142 Air Max, 6143 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6128 Air Max, 6129 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

10x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6128 Air Max, 6129 Air Max Vacuum Cleaner - microfleece, 28,5 cm x 16.5 cm, White - Vhbw

15.12£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6116 Air Max, aam 6117 Air Max, aam 6118 Air Max, aam 6119 Air Max - White

Vhbw - 20x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6116 Air Max, aam 6117 Air Max, aam 6118 Air Max, aam 6119 Air Max - White

15.46£
 Shipping 8.90£

Manomano.co.uk

50x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6120 Air Max, aam 6121 Air Max, aam 6122 Air Max, aam 6123 Air Max - White - Vhbw

50x Vacuum Cleaner Bag compatible with AEG/Electrolux aam 6120 Air Max, aam 6121 Air Max, aam 6122 Air Max, aam 6123 Air Max - White - Vhbw

37.81£
 Shipping 8.90£

Manomano.co.uk

vhbw 30x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6127 Air Max, AAM 6128 Air Max, AAM 6129 Air Max, AAM 6130 Air Max - White

vhbw 30x Vacuum Cleaner Bag compatible with AEG/Electrolux AAM 6127 Air Max, AAM 6128 Air Max, AAM 6129 Air Max, AAM 6130 Air Max - White

24.92£
 Shipping 8.90£

Manomano.co.uk

20x Vacuum Cleaner Bag compatible with Blue Air cb 940 Vacuum Cleaner - Microfleece, 24.9 cm x 21.9 cm, White - Vhbw

20x Vacuum Cleaner Bag compatible with Blue Air cb 940 Vacuum Cleaner - Microfleece, 24.9 cm x 21.9 cm, White - Vhbw

30.08£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter Replacement for Rowenta RS-RT900574 for Vacuum Cleaner - Air Filter Black White

Vhbw - 2x Micro Hygiene Filter Replacement for Rowenta RS-RT900574 for Vacuum Cleaner - Air Filter Black White

12.02£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter compatible with Moulinex MO3786PA, MO3951PA, MO3953PA, MO3967PA Vacuum Cleaner - Air Filter Black White

Vhbw - 2x Micro Hygiene Filter compatible with Moulinex MO3786PA, MO3951PA, MO3953PA, MO3967PA Vacuum Cleaner - Air Filter Black White

12.02£
 Shipping 8.90£

Manomano.co.uk

Vhbw - 2x Micro Hygiene Filter compatible with Moulinex MO3718PA, MO3723PA, MO3751PA, MO3774PA Vacuum Cleaner - Air Filter Black White

Vhbw - 2x Micro Hygiene Filter compatible with Moulinex MO3718PA, MO3723PA, MO3751PA, MO3774PA Vacuum Cleaner - Air Filter Black White

12.02£
 Shipping 8.90£

Manomano.co.uk