The Linen Yard Seafoam Green Fitted Bed Sheet. Featuring a plain, coloured fitted sheet. Made from 100% Cotton and a 250 thread count, this fitted sheet is extremely comfortable and cosy. Soft and crisp feel with a matte finish. 250 Thread Count. 100% Cotton. This fitted sheet design is both a contemporary and classic addition to your home, in modern colours that adds an effortless relaxed look to your bedroom. Relaxed.