Adjustable and Black, low-messy: The length of the tensioner is able to be adjusted between 25cm and 65cm according to your needs, and because the band is elastic, it can be extended up to a length of 100cm. Shorter than others, but tighter during the function, makes the fabric more stable. Do not damage the sheets: The alligator clips are designed with plastics, it allows tensioners to attach the tissues without any damage. Multi-purpose: Suitable for ironing boards, seat covers, sofa covers, sheets, crib underpads, mattresses, blankets, quilts, tablecloths, etc. A little short length gives more possibilities to these tapes, you can apply them to so many places where you need to stretch, bind or fasten.