Large Opening--The water bag has a large opening and can be easily filled with water. In addition, the water outlet is large enough that you can put your hand in to clean the inside.
The fill cap attaches to the bladder so you don't have to worry about it being exposed to air. High-performance seals unscrew well and fill securely.
2L Water Tank -- 14.2" x 6.8" water bladder universally fits most backpacks. It is made of high-quality materials to provide you with a perfect drinking experience.
When the water bladder becomes empty, it can be folded. So it won’t take up much space in your backpack.
High-Performance Drinking Valve – Easy-to-operate on/off valve. The soft mouthpiece means you won't bite it easily. Water flows smoothly out of the valve, so you don't have to put a lot of effort into getting it into your mouth.
The flow of water can be controlled by biting. The pipe joint design makes it easy to disassemble and install the pipe.
Pressure Resistant – Made from very strong materials that can withstand pressure excellently. The dual sealing faces really improve durability a lot.
It provides a healthy flow of water and is easy to drink to keep you hydrated while biking, biking, hiking or running!
NOTE - When you fill the bag with water weight, place the bag down with the opening side up and the screw cap should close securely.