Why is this best choice for outdoor sports?
High quality water bag
Insulated water bag tube
Multi-space multi-layer pocket
Adjustable shoulder straps, chest straps and belts ensure that fits your body size
Breathable back lining
Emergency whistle in case of emergency
Reflective strips keep your visibility
External rubber bands can be used for extra carrying of other things
The keychain ensures that the key is in a clear position
Mouthpiece valve is not easy to leak
Presumably all of the things here are the focus of every outdoor hobby
You have it, it won’t let you down.