2.5 cm wide extra elastic bands for reinforced tension. Perfect for duvet covers, mattress protectors, sheets, adjustable beds, hidden beds, RVs, tablecloths, sofa covers, etc. With the protective plastic films, the metal clips hold fabrics securely and won't cause damage. Perfect for duvet covers, mattress protectors, sheets, adjustable beds, hidden beds, RVs, mattress toppers , tablecloths, ironing board covers and blankets etc. 2cm wide sheet clips are adjustable from 18cm to 52cm in length. Adjustable length to work with almost any sheet i.e. flat sheets or flat sheets. To secure your bed sheet securely. With the sheet clips you will also get rid of this worry and you can now enjoy sleep and start the new day. Your sheet will always be smooth and firm.