Specifications:

1) Re-designed support system with technical padding 

2) Weatherproof zips 

3) Two handles for easier positioning 

4) Access to main compartment from side and under front bag 

5) Deflected hip strap with mesh pocket 

6) Front strap with whistle 

7) Expanding pockets on sides 

8) Bottle holder on side 

9) Ice-axe holder 

10)Hydration hole

11)Aluminum bars