TETON Sports TrailRunner 2.0 Hydration Pack; Free 2-Liter Hydration Bladder; For Backpacking, Hiking, Running, Cycling, and Climbing SATISFY YOUR THIRST FOR ADVENTURE: Lightweight and comfortable hydration backpack; This pack is a terrific companion to keep you hydrated while running, cycling, hiking or any adventure outdoors FREE HYDRATION BLADDER: BPA free, 2-Liter hydration bladder; Durable, kink-free sip tube and push-lock cushioned bite valve; Large 2-inch (5 cm) opening for ice and easy cleaning CUSTOMIZABLE COMFORT: Backpack for men, women, and youth; Adjusts to fit all frames; Comfortable mesh covered shoulder straps mean you can wear this pack for hours TRUSTED QUALITY: Over 1,000 verified 5-star reviews testifying to the quality and design; Large mesh pocket for your wallet, phone, and snacks TETON SPORTS PROMISE: Reach out to our AMAZING customer service team if you have any questions or concerns; YOU CAN COUNT ON US to get you taken care of and back OUTDOORS with TETON Sports