iSleep Fine Soft material is made from high-quality microfiber material with 900 Thread Count (TC). iSleep fine soft material is made from high-quality microfiber material with 900 Thread Count (TC). Our fitted sheet has elastic edges which fit up to 14 inches of mattress. It is soft and extremely comfortable. This material is breathable and durable and suitable to be used in the local tropical climates. These sheets can be washed at home in your washing machine. It is anti-bacterial and anti-dust mite, hypoallergenic.