Specifications:Material:,Nylon,+,Metal clips.Color,black.Size:,The,shortest,(relaxed,state),100-150,cmThe,longest,(stretched,state),200-250,cmWeight:, 132 g.Scope of delivery:2 x bed sheets Bed Hook Fasteners:,Made,of,high-quality,nylon,+,metal,clips,,high-elasticity,fit,fits,most,fitted,sheets.,These ,Bed curtain tensioners,hold,your,sheets,without,adjusting,and,keep,them,in,place,all,time.,And,never,damage,your,sheets.Robust,clips:,Wide,elastic,offers,stable,and,stronger,hold,for,heavy,purposes.,The,metal,clips,hold,your,sheet, firmly.,Highly-elastic,bed-hedge-tensioners,provide,stable,and,strong,hold,for,your,sheets.Adjustable,counter-bracket:,The,bed-gap,holder,is, adjustable,,allowing you to find the tension you want and keep your sheets tidy all day.Easy,to,use:,Several,easy,steps,to,affix,and,hold,your,sheets,in,,to,keep,your,sheets,not,slide,off,the,corners.