Strong Triangle Design: Triple Protection Design, Worry-Free Of Pulling And Rolling To Straighten The Sheets Every Night.Adjustable And Elastic: Our Sheet Straps Come With Straps At Each End Which Are Firmly Attached To The Sheets And Which Are Fully Adjustable For Every Bed Size And Sheet.Quality Material: Made With Durable Chrome Metal Ties And White Nylon Elastic, Featured With Good Elasticity And Smooth Consistency.Easy To Use : Tool-Free, Just Hold The Mattress And Attach The Clamp To The Edge Of The Sheet And The Length Of The Strip Can Be Extended As Needed.Scope Of Delivery: 8 Pieces High-Quality Adjustable Chain Tensioner, Ideal For Duvet Cover, Mattress Cover, Bedding, Adjustable Bed, Murphy Bed, Camping, Tablecloth, Iron Bedspread, Etc.