Fixings for the ironing cover and the traps have plastic washers that do not damage the fabric. Adjustable length allows desired tension. Set of 4 extendable tensioners: extendable up to 32 to 58 cm. Easy, quick to change and perfectly secure. Designed to hold the ironing board cover securely in place, ensuring a smooth, wrinkle-free surface for much better results. Suitable for ironing boards, seat covers, covers sofa beds, sheets, baby beds, mattresses, blankets, quilts, tablecloths, etc. Sheet or ironing cover taut thanks to these 4 tensioners! Equipped with plastic-coated metal clips, they keep the ironing sheet or cover securely in place. LIHAO Elastic Fitted Sheet Stretcher, Adjustable Retainer Strap Fastener for Bed Sheet, Sofa, Ironing Cover (White, Set of 4)Product information:Material: nylon elastic + metal clipsWidth: 2cm Length: 16 - 25cm Stretch Length: 33 - 53cmQuantity: sold in a set of 4Color: whiteFeatures:Multi-purpose: suitable for almost all types of carpets from bed sheets, mattresses, tablecloths, ironing board covers and other covers.Sturdy and durable: the + quality, elastic nylon ribbon and clips in plastic and metal.Practical: easy to use for any occasion.Integrated plastic clamping system does not damage the fabric. Adjustable length allows for desired tension. Thanks to these straps, the cover or the sheet does not move any more: no more creases. Package Content: 4 x fitted sheet stretchers Note: The data are all manual measurement, please allow an error 1 - 3cm, due to the light and display difference, there will be some color difference, depending on the physical object received.