EXCELLENT QUALITY MATERIAL:Our water bladder for hydration pack is made from Premium Ultra-Durable field tested materials.13.8* 6.7 Inch Hydration bladder is compatible with most hydration packs.
LARGE CAPACITY SUPPLY:2 liters water backpack supplying you with cold water for a minimum of 4 hours,SKL Hydration water blader are the perfect solution for running,cycling,biking,hiking,climbing,skiing or hunting.0.6mm extra thick liner is pressure-tolerant and wear-proof;double soldering sealing side technique has greatly improved durability.
Upgraded :Our bladder system has quick release auto-lock system that prevents leaking when tube is detached and allows the tube to be easily disconnected from water reservoir for filling.
The QUICK RELEASE TUBE:It equipped with a High-Flow soft bite mouthpiece for easy drinking and a dust cover that prevents the dust & dirt from reaching the bite valve.
Satisfactory Customer Service:Any questions please feel free to contact us 7*24 hours,it's our goal to offer the BEST customer service on Amazon!