amazon e-commerce hot sale weight-bearing sand vest heavy invisible steel ball sand running fitness sports equipment factory store

Please note when purchasing:

1、Our burden-carrying vest is made of a material that meets the standards of...American environmental protection standards andDouble-sided Double-layer Diving FabricElastic fabric, LycraFabric

2. The edging of our backpack is made of the same fabric as the vest.Elastic cloth edgeThis kind of edge wrapping is tight, strong, and beautiful, different from the woven belt edges on the market.

3、内部采用Pure steel bead fillingIt does not leak sand or residue, and is not at all iron sand or slag.