The gym bag adopts high-density oxford cloth and nylon lining to ensure excellent waterproof and wear-resistant performance. Its multi-compartment storage design keeps clothes, shoes and valuables in order and improves security. The back strap design allows the bag to attach to the telescopic handle of a suitcase and frees users' hands during trips. The reinforced handle and flexible shoulder strap provide stable load-bearing capacity and diverse carrying methods. The breathable and expandable structure meets the storage demands of short trips, fitness activities and daily commuting.