Product descriptionSize: 2L:180*390MM3L: 188*520MMColor: blue, army greenMaterial: bag body: food grade TPUNozzle: food grade siliconeDrinking water pipe: food grade PVCPackage content: 1pcs outdoor sports cycling water bag1. PREMIUM TASTE-FREE MATERIAL FOR SAFETY: The replacement for hydration packs for outdoor use is made of high-quality antibacterial material. Food grade TPU material and TPU drinking tube make the drinking water bladder safe to use. Tasteless, non- toxic, BPA-free, and FDA approved. The bladder of the water tank has passed the pneumatic pressure test and is completely pressure tolerant.2. [2L /3L HYDRATION BLADDER WITH LARGE CAPACITY]:The 2/3 liter hydration bladder is designed for most sizes of hydration packs. You can use the backpack hydration bladder for outdoor activities: hiking, running, cycling, skiing, horse riding , camping, biking, climbing, etc. It is a must have for sports enthusiasts and an ideal gift choice. Leakproof backpack bag for sport cycling.3.LARGE OPENING FOR FILLING AND EASY TO DRINK: The 2L/3L hydration bladder drinking water reservoir has a large opening through which water can be easily filled / refilled and cleaned. This 2/3 liter water container can withstand temperatures from- 20 to 50 degrees Celsius. The TPU hose has excellent elasticity, is more resistant to bending and is easier to adjust while drinking.4. [LEAK-PROOF & ERGONIMIC BITE VALVEHYDRATION]-Military-grade sealing lines are attached to the edge of the military-grade hydration water bladder to ensure the 2L/3L bladder is pressure tolerant and leak-proof. The bite valve has an ON / OFF switch. Just bite the mouthpiece to suck in water. Dust cap protects the mouthpiece from dirt. Simply pull the bite valve up to drink and push to close.