They secure fitted sheets, fitted sheets, mattress toppers, tablecloths, ironing board covers, throws and more. And with the sturdy construction of these straps, your bed sheet will stay in place. place for a long time and will ensure that your bed always looks good. It can firmly grip your bed linen. Easy to fit and keeps sheets in place. Triangular design prevents permanent elastic slippage. Straps fit fitted sheets and flat sheets. It works with all types of litter and does not require heavy lifting.