Veevanpro 15L Lightweight Hiking Backpack Water-resistant nylon material, durable and lightweight for hiking Dimensions: 10.6 x 6.5 x 17.3; Capacity: 15 L 2 mesh pocket, 1 main compartment with elastic sleeve for organization Top thicken handle, adjustable contoured padded shoulder straps for comfort; ergonomically designed airflow padded back panel to prevent overheating Backpack can fit 2L hydration reservoir but it doesnt come with reservoir and tubing