This bag is excellent from usability standpoint perfectly suits for gym purpose. Design and idea behind this bag is innovative and that shows competitiveness of this product. Outer Material: Nylon Color: Black Water Resistantce: Water resistant Capacity: 30 liters; Weight: 340 grams; Dimensions: 10 inches x 18 inches x 10 inches (LxWxH) Warranty type: Manufacturer; 5 years domestic warranty