Hydration Pack For Running, Cycling, And Hiking Including A 2 Liter Bladder And Product Details We have 3 styles of hydration bags for outdoor enthusiasts to choose from: LIGHTWEIGHT ? The hydration backpack is only 0.73lb/333.5g. Made of waterproof and anti-scratch oxford fabric. Durable and portable water backpack. Enough to get you through a day of hiking, cycling, running or biking CONTAIN WATER BLADDER ? Zavothy hydration pack backpack with 2L water reservoir. The bladder is BPA-free and anti-leak guaranteed. Stay hydrated in any time without taking an extra water bottle. Convenient and frees up your hands LESS PRESSURE TO BACK AND SHOULDER ? The backside of the hydration backpack is designed with breathable Y shape soft air mesh. Combining with length-adjustable shoulder gird. Minimize pressure, less tiredness, comfier MULTI-FUNCTIONAL ? The mountain bike backpack can easily store a bike helmet.Practical for daily running exercise, biking, or short-distance hiking ZAVOTHY assures you that our high-quality hydration backpack will exceed your expectations! We are committed to providing you with a superior product. However, if you find yourself less than fully satisfied with your purchase, we encourage you to reach out to us. Our team is here to address any concerns and ensure your happiness. 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.