Package - 10 rolls x 10 meters(10.9 yards) elastic cords, total 100m/109 yards, about 0.5mm(0.019’’) thick. Please kindly note that colors of these cords are randomly mixed in a bag. Material - Made of premium elastic fiber with good elasticity and flexibility. They are durable, strong and hard to break or fray with a long using time. Usage - These stretch strings are great for DIY projects, like braiding, beading, necklaces, fine lacing, earrings, hair ornamentation, hanging and more. They are strong enough to tie, hold the knot and secure your beads well, perfect for all kinds of jewelry and craft project makings. Easy to Use - The elastic cords are with good resilience, allows them to restore the original length without deformation in the allowable range of tensile. Each roll is wrapped around the string spool, convenient to use and organize. DIY Gifts - Threading some lava beads, gemstone beads and glass beads with big eye beading needle or weaving with seed beads to make unique bracelets and necklaces, they will be nice gifts to your friends family members or yourself on holiday season.