This bag can be inserted into backpacks that have an opening for the hose and is particularly suitable for off-road use. Features TPU + silicone spout Open and close with Slide Seal Top, makes it easier to fill the bag and ensures a tight seal. The Blaster valve prevents water leaks. Compatible with most backpacks with hydration system, tube length: 95 cm Plug-N-Play connection system allows easy disconnection of the hose when the bag is full Can be completely turned inside out for easy cleaning Withstands temperatures from -25 to +60 degrees.