The 18L And 22L Oasis Hydration Backpacks From Teton Sports, And Bicycling. Product Details Here?s what we?ve heard: It?s the perfect size, you can quickly bungee a helmet or coat to the back, and it carries enough water for a full day of adventure. TETON has taken its original (and extremely popular) hydration pack and made it even better. With two sizes, you can find the ideal pack to meet the demands of your next adventures, whether that?s a day hike, festival, or really long walk. Bonus: The color choices are dreamy. WATER NEVER TASTED SO GOOD: During a long hike having water so convenient and still cold?there?s nothing like it. Lightweight with a custom fit, you?ll forget you have it on until you need it.18L pack give you plenty of storage for your day hike HYDRATION BLADDER INCLUDED: 2-liter water bladder included; Complete with durable, kink-free sip tube and innovative push-lock cushioned bite valve; Large 2-inch (5 cm) opening for ice that also makes cleaning easy GET THE PERFECT FIT: Low-profile athletic cut with full adjustment fits all body types comfortably; Comfort-taped straps with high-density notched foam stabilizer and mesh covering means you can wear this pack comfortably for hours, Water backpack for hiking fits men, women, and youth LOADED WITH FEATURES: 18 Liter hiking backpack with hydration bladder; Large pocket with a hidden-teeth zipper: Weather guard protects everything you?re packing; Bungee cord system for bike helmet; Butterfly opening for jackets, etc. TETON SPORTS PROMISE: Reach out to our AMAZING product support team if you have any questions or concerns; YOU CAN COUNT ON US to get you taken care of and back OUTDOORS Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.