The OUTLANDER XC Hydration Pack 4L balances mid-range cargo space with featherweight construction at just 430g, using USWE's patented No Dancing Monkey 1.0 harness to lock 4L of storage and a 1.5L Elite bladder against your spine with zero bounce through technical descents and punchy climbs. Ventilated mesh straps pump air across your torso while elastic suspension wraps your chest without crushing your ribs, letting you haul spare tubes, tools, and extra layers on long mountain bike rides and gravel races without feeling the load.