Micro Fibre Head is specially made from Polyester threads. Refill weighs 90 grams approx. each and diameter of Microfibre is approx 34 cm.The absorbent micro fibres in the mop head absorb up to 10 times the moisture of a traditional microfibre mop and readily soak up big spills and remove stubborn stains..It can be used on all spin mops / Magic Mop / 360 degree rotating mop etc. Not compatible with Mini Mops..Keep your hands out of dirty water. Durable and longer service life. Reusable and machine washable..Durable and longer service life. Reusable and machine washable. Safe and easy to clean. Compatible with almost all spin mops.