Ironing board cover clips and traps have plastic rings that won't damage the fabric. Adjustable length allows for desired tension. Set of 4 extendable bungee cords: the original length is 65-130 cm, the maximum extension length is 200 cm. If you want to extend its lifespan, try not to exceed 220 cm when using it. Conthisused to keep the bed sheet firmly in place, ensuring a smooth, wrinkle-free surface for much better results. Easy, quick to change, and perfectly secure. The extra long size makes it more suitable for some relatively large items, such as sofa covers, sheets, cribs, mattresses, blankets, quilts, tablecloths, etc. Bed sheet or sofa cover tightly stretchedhasThese 4 tensioners! Plastic-coated metal clips hold them securely in place.