Abstract: A buoyancy dry bag includes an air valve unit, and first and second body parts that are connected to each other and that cooperatively define a receiving space. The first body part has a lining layer made of thermoplastic polyurethane, and an external layer structure having an inner layer disposed at an outer side of the lining layer and made of thermoplastic polyurethane, an outer layer contacting an outer surface of the inner layer and made of polyester, and a pattern layer contacting the outer layer. The first body part defines a first air chamber between the lining layer and the inner layer. The air valve unit includes a first air valve mounted to the external layer structure for injection of air into the first air chamber therethrough.

Abstract: A buoyancy dry bag includes an air valve unit, and first and second body parts that are connected to each other and that cooperatively define a receiving space. The first body part has a lining layer made of thermoplastic polyurethane, and an external layer structure having an inner layer disposed at an outer side of the lining layer and made of thermoplastic polyurethane, an outer layer contacting an outer surface of the inner layer and made of polyester, and a pattern layer contacting the outer layer. The first body part defines a first air chamber between the lining layer and the inner layer. The air valve unit includes a first air valve mounted to the external layer structure for injection of air into the first air chamber therethrough.