General description Strong triangular design for triple protection and a more permanent fixation. Works with almost all types of bedding. Designed to hold the cover securely in place and ensure a smooth, wrinkle-free surface for much better results. Suitable for bed sheets, ironing board covers, seat covers, sofa covers, mattresses, blankets, quilts, tablecloths, etc. Bed sheet or ironing cover will be held in place thanks to these 4 tighteners! Equipped with plastic-covered metal clips that hold the sheet or ironing cover securely in place. Technical specifications Set of 4 fitted sheet tighteners. Original length: 9.5 cm to 16 cm, extendable to 25 cm to 45 cm. Adjustable length allows you to achieve the desired tension.