Unisex Durable Outdoor Sports Daypack Backpack with Waterproof Covers Perfect for Hiking Climbing Camping Travelling (Grey) 1. 100% satisfaction guaranteed backpack, 25L hiking backpack for outdoor sports with comfortable straps and air ventilation system. 2. Waterproof: Made of water-resistant nylon fabric, supply with water-proof rain cover in zippered compartment on the underside of the bag, always keep your stuff dry. 3. Comfortable: lightweight & durable material, The thick padding on the shoulders and back absorbed and helped to redistribute the weight over a wider surface area helping to alleviate the burden. 4. Spacious: 47cm tall, 27cm wide, and 17cm deep, 25L,Internal pockets for ear buds, laptop, accessories, adjustable length to each of the straps. 5. What You Get: outdoor hiking backpack, waterproof cover, our 1 year limited warranty and friendly customer service.