⭐ PREMIUM QUALITY - All parts of the Zee Best hydration bladder are made of premium materials. Zee Best water reservoir is food-grade & BPA free. It won’t leave a bad taste in your drink. The water bladder is leak proof and pressure-tolerant. This fluid reservoir can withstand temperatures from -20 to 50 degrees Celsius. ⭐ DUAL HANDLE & LARGE SCREW CAP OPENING FOR EASY CLEANING AND FILLING - Zee Best hydration bladder has a unique dual opening. The "Handle'' opening makes for 'full access' cleaning/drying for large hands or cleaning brush/washcloth. Large "Screwtop" opening is wide for easy filling with liquid and large ice cubes. The screw on cap goes on and off easily. For cold fluid, simply add ice cubes directly ice dispenser. The smooth inner of water reservoir promotes health and is easy to clean. ⭐ EXTRA BITE VALVE - with Quick Connect hose system at BOTH ends of the hose. TWO soft mouthpiece allows for two people to use a single bladder without cross contamination of using the same mouthpiece. OR one being cleaned, while one being used. Water flow by gently biting. When not biting, the fluid will not leak out. The hydration bladder will stay filled non-leaking when storing neatly in fridge/icebox without tangling hose. ⭐ INSULATED HOSE, NON-BOUND - prevents fluid in hose to freezing in sub-temps and cool in wqarm temps. Ability to easily push insulation back to visualize the integrity of the inside of the hose. It is ZEE Best gift for yourself and friends who love outdoor sports. ⭐ PREMIUM QUALITY - All parts of the Zee Best hydration bladder are made of premium materials. Zee Best water reservoir is food-grade & BPA free. It won’t leave a bad taste in your drink. The water bladder is leak proof and pressure-tolerant. This fluid reservoir can withstand temperatures from -20 to 50 degrees Celsius. ⭐ DUAL HANDLE & LARGE SCREW CAP OPENING FOR EASY CLEANING AND FILLING - Zee Best hydration bladder has a unique dual opening. The "Handle'' opening makes for 'full access' cleaning/drying for large hands or cleaning brush/washcloth. Large "Screwtop" opening is wide for easy filling with liquid and large ice cubes. The screw on cap goes on and off easily. For cold fluid, simply add ice cubes directly from a scoop or refrigerator ice dispenser. The smooth inner of water reservoir promotes health and is easy to clean. ⭐ EXTRA BITE VALVE - with a Quick Connect hose system at BOTH ends. TWO soft mouthpiece allows for two people to use a single bladder without cross contamination of using the same mouthpiece. OR one being cleaned, while one being used. Water flows by gently biting. When not biting, the fluid will not leak out. The hydration bladder will stay filled non-leaking when storing neatly in fridge/icebox without tangling hose. ⭐ INSULATED HOSE, NON-BOUND - prevents fluid in hose to freezing in sub-temps and cool in warm temps. Ability to easily push insulation back to visualize the integrity of the inside of the hose. It is ZEE Best gift for yourself and friends who love outdoor sports.