The original and best. This is a high quality cotton-cloth filter, simply known as the 'Coffee Sock' in Singapore. It's the traditional method with which to brew your Nanyang Kopi (there's a much thinner muslin-style one for Tea), providing the authentic silky and velvety mouthfeel to your brews - an experience no other filter provides. This is a reusable filter, so just rinse, wring and dry after each use. No need for throwaway paper filters like other brewing methods! It can also be used for other coffees, not just Nanyang Kopi! Details White Cotton with twisted metal handle Suitable for use with Brewing Cups and Brewing Pots Top or bottom hooks can be used to hang-dry N.B. Coffee will cause the cloth to permanently stain due to natural oils found. This is considered normal The more the Coffee Sock is use, the better it is 'seasoned' (like a wok). Care Hand-wash only, no detergent. Hang to dry.