About this item Package Contents: You will receive 100 pieces of black rubber bands in 5 sizes, each size 20 pieces, enough to satisfy your various needs, and you can share them with your family and friends. Rich Size: There are 5 sizes of thick rubber bands: 8.5cm/3.35in, 6.5cm/2.56in, 5.5cm/2.17in, 3.5cm/1.38in, 2cm/0.79in; their thickness is 0.5cm/0.2in. With good elasticity, it is suitable and convenient for packing small and large items. Reliable Materials: Our heavy-duty rubber band is made of premium rubber, which is durable, elastic, safe, not easy to break or deform, and can be supported and used for a long time. Reusable & Good Elastic: Our thick rubber bands are reusable and stretch resistant, just clean them with water, providing you a long service life. Multiple-Use: These rubber bands are perfect for wrapping or bundling notebooks, file folders, equipment, containers, boxes, etc. They can be used for home, office, school, keep your things organized.