MOUNTAINTOP Hiking Backpack 30/40L Lightweight Water-Resistant Backpacks Climbing Camping Travelling Daypack MATERIAL- Polyester , Breathable mesh shoulder straps , moisture-proof, Touch smooth. HIGH-CAPACITY- Professional backpack for overnight or weekend camping or traveling. Main compartment, bottom zipped access, front pockets and mesh side pockets to keep your stuff separate and organized. MULTIPLE FEATURE- SBS zipper, YNS buckle-Cold-resistant and Securely; Reflective strip design, higher safety factor for night; more humane, more convenient for travelling. VERSATILE- Ultra-light,Ultra-durable,Daypack,Perfect for hiking,Outdoor sports,Travel,Camping,Day-to-day use. PRODUCT PARAMETERS- Capacity:30L .Dimensions:19.7x11.8x6.2 inches. Weight:1.27lb