Size details -- There are 3 cards TPU invisible ribbons, 10m per card, 30m in total, 10 mm/0.39inch wide. The length is enough for your long-time useDurable and Reliable -- The stretchy elastic band is made of high quality TPU fabric with elastic properties that can stretch and return to its original shape. It is durable for long term use and will not breakFrosted Surface -- The surface of the strap is frosted so that it does not slip off during use due to sweat or water and is comfortable to the skin, so it is suitable for many occasionsEsay to Use -- Transparent elastic ribbon is wrapped by a paper-wrapped card, easy to use, quick and simple to install and remove. It can be cut into different lengths to meet different needs, and can be glued with hot glue during use, or heated and softened first before sewingMulti-Functions -- Transparent elastic ribbon are suitable for DIY summer bras, swimming costumes, underwear, sportswear and many other items, besides, it is also can be used as invisible shoelace