For those who are preparing for a long run or cycling trek， we highly recommend you this AT6612 2L Long Neck Water Reservoir Hydration Pack! Made of top grade TPU materials， it is anti-bacterial， extra heavy-duty and durable. Advanced sealing technique prevents leak so you can rest assured to pack it into your bag. This hydration pack is also equipped with an anti-bacterial watertight hose system that offers quick opening and easy sipping. And it is easy to refill with an extra large filling cap. Click and order right now!                                    Features             Great for those who are preparing for a long run or cycling trek<br> Made of top grade TPU materials， anti-bacterial， extra heavy-duty and durable<br> Advanced sealing technique prevents leak<br> Equipped with an anti-bacterial watertight hose system for quick opening and easy sipping<br> Extra large filling cap， easy to refill<br> Easy to carry   <br>                                                            Specifications             Brand     AOTU    <br> Model     AT6611    <br> Material     Environmental Protectionfood Grade TPU Composite Cloth      <br> Capacity     2L    <br> Color     Camouflage      <br> Pipe     100cm    <br> Dimensions     (14.96 x 6.77 x 0.39) / (38 x 17.2 x 1)cm (L x W x H)    <br> Weight     7.05oz / 200g     <br>                                                             Package Includes            1 x Water Bag<br>