Features1Made of PEVA and silicone material, safe and without taste. 2135 degree ergonomic angle bite mouthpiece and high flow PEVA water tube, just need less angle to put mouthpiece into your mouth and drink higher water flow per sip. 3The bite mouthpiece has ON/OFF valve, simply pull valve up for drinking and push it down for closing. 4Large and wide opening mouth makes filling/refilling water quickly and cleaning easily for every corner. 5Double sealing edge and sealing clamp, make sure the pressure tolerant and leak proof features. 6Optimal temperature is from -20 to 50, portable to store hot/cold water during outdoors activities. 7Suitable for riding, running, cycle, backpacking, camping, hiking, mountaineering etc.SpecificationSpecification: Capacity: 1.5LMaterial: PEVA + Silicone + Plastic Size: 31 * 17.5 cm / 14.4 * 6.9 in (unfill water)Tube length: 102 cm / 40.2 in Optimal Temperature: -20 to 50Package List1* Water Bladder