1. Inflatable cover integrated connection, anti-loss, gas mouth tightly closed, not easy to leak air
2. Thickened solid handle, tightening is not easy to loose, strong and durable
3. Handle grip comfortable, easy to use exercise
4. Thickened non-slip material, safe to use
5. Material: PVC
6. Material thickness: 70 silk
7. Size: 5kg: about 28 x 15cm, 10kg: about 58 x 15cm, 15kg: about 63 x 19cm, 20kg: about 73 x 19cm
8. Description: no liquid shipping, need to fill by yourself