USWE Outlander XC 4L

The Outlander lineup is a light race-oriented hydration pack series developed and designed around pro mountain bike athletes. The pack is stripped off to go minimum on weight and to maximize the ventilation at the front but has a larger main compartment for your necessities. 

This one is a blend of their slim Outlander 2L hydration pack with a bigger tank of hydration for the extreme races. The Outlander XC 4L is geared-up with a 3.0 liter Elite hydration bladder.