Spider Pro Hydration Pack Lightweight Backpack with 2L Water Bladder INCLUDE BONUS MICROFIBER SPORTS TOWEL Hydration Backpack Great for All Outdoor Sports Adjustable Chest Sizes 27" - 50" DURABLE AND WATER RESISTANT: Made with 600 polyester material features an innovative diamond-shaped design, this hydration pack reduces wear and tear. HUGE CAPACITY WATER BLADDER: Spider Pro hydration pack backpack carries a large 2 litre water bladder. Irrespective of whether you are running, walking, biking, hiking, mountain climbing, or cycling, or any other extreme sports. The bladder is BPA-free, made of FDA approved materials. SPACIOUS STORAGE COMPARTMENTS: Just like a normal backpack, this hydration pack has storage compartments that you can use to carry your camera, wallet, iPhone, keys, and more accessories. At 18" x 10" x 4", grateful for any sports activity . MADE TO FIT PERFECTLY: No matter your age, gender, or chest size, our hydration packs is designed for a perfect fit. The adjustable straps of the hiking backpack with hydration ensure that a teenager with a 25 chest size gets an equally snuggly fit as an adult man/woman with a 50 chest size. BONUS MICROFIBER TOWEL DRY FIT: Size: 31.5" x 15.8" Every purchase of this hydration pack comes includes a bonus microfiber towel dry fit. The towel is perfect for sporting activities like running, cycling, climbing, dirt bike, and more. It fast drying. 100% Satisfaction Guarantee: If for any reason you are not 100% satisfied with this product, please contact customer service within 30 days. Click Add to Cart now!