Black White Stretchy String: package includes 2 rolls of flat elastic string in white and black each color 1 roll; 0.6mm in width 0.3mm in thickness 131 yards(120m)/roll 262 yards(240m) in total. Classic colors fit all kinds of beads Organizing Case Included: each roll of elastic bracelet cord comes with a storage box you never have to worry messing it up when you use it; the cord is coiled in its natural state which will well protect the bracelet cord to keep it in good elastic condition High Elasticity Strength: the ealstic strings are made of elastic spandex material with admirable and visible quality boasts superior abrasion and aging resistance for prolonged durability with strong elasticity always retracts to its original form Easy to Use: the bracelet elastic rope can be easily cut into your desired length easy to knot and the knot will not loosen automatically the elastic string is hand rolled into strands from multiple heeled threads soft and comfortable to the touch Ideal for Jewelry Making: the elastic string can be used for making friendship bracelets beaded bracelets necklaces waist chains anklet chains jewellery DIY crafts sewing hanging decorations knotting hair braiding etc