Specification Material: Elastic b and metal clip and plastic buckle Size: Width 2.5CM adjustable range 25-40CM Col: White Package included 8 Bed sheet gripper suspender belt clips < Scope of delivery - 8 pieces of high quality adjustable bed sheet tensioners ideal f duvet covers mattress protects bedclothes adjustable beds hidden beds camping tablecloths ironing board covers etc. Adjustable elastic - from 25 cm to 40 cm can meet your different needs such as bed linen mattress toppers tablecloths ironing board covers slip sheets many me. Keeps the bed sheet in place all night. High Quality Clip Closure - The metal clip grippers are rubberized to keep the fabric intact without damaging the fabric. Easy to install Use - Without tools just hold the mattress attach the clip to the edge of the bed sheet.