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USWE Outlander XC 4L hydration pack in black with red hydration hose, showing ventilated mesh shoulder straps and elastic chest harness with adjustable buckle system.
Rear view of USWE Outlander XC 4L mountain bike hydration pack displaying breathable mesh back panel, red elastic straps, and No Dancing Monkey harness system with integrated hydration tube routing.
USWE Outlander XC 4L hydration pack with main compartment unzipped revealing 1.5L Elite hydration bladder inside, showing lightweight ripstop construction and compact 4L storage capacity for mountain biking essentials.
USWE Outlander XC 4L hydration pack in grey with red hydration tube, featuring ripstop fabric construction, elastic harness straps with quick-release buckle, and external zippered pocket for cross country mountain biking.
USWE Outlander XC 4L hydration pack shown from side angle highlighting perforated mesh back panel with red elastic straps, integrated hydration tube routing, and No Dancing Monkey harness buckle detail for zero-bounce stability.
USWE Outlander XC 4L hydration pack with main zipper partially open exposing interior compartment and hydration bladder, demonstrating lightweight ripstop fabric and streamlined 4-point harness design for cross country mountain biking.

Outlander XC Hydration Pack 4L

A GRAVEL OR MTB PACK SO FAST YOUR CAN BARELY SEE IT

$144.99
Color:Blue
Key details
  • Weight: 430g/0,94lb without bladder (450g/0,99lb with bladder)
  • Pack Volume: 4L
  • Hydration Volume: 1.5L / 50 oz
  • Hydration: Elite Hydration Bladder with fixed Coupling Made by HydraPak®
  • Harness:

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WHY WE DESIGNED IT:


A lightweight hydration backpack supplying 4L of storage capacity when you need to bring extra gear and energy on top of the hydration. Equipped with highly ventilated shoulder and chest straps in soft mesh. The OUTLANDER 4LXC is geared-up with our award winning patented No Dancing Monkey™ 4-point harness that makes the pack 100% bounce free in action. The unique stretchy harness allows a tight fit but gives that extra freedom to breathe and move.

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Size guide - Outlander XC Hydration Pack 4L

Find your perfect fit

Min Chest Circumference Max Chest Circumference
84 cm110 cm

Features & Specs

Features

  • Zero bounce with NDM harness
  • 1.5L/50oz Hydration system - Elite hydration bladder included.

Specifications

  • Pack Type Hydration Backpack
  • Activity Mountain Bike, Gravel
  • User Unisex
  • Weight 430g/0,94lb without bladder (450g/0,99lb with bladder)
  • Dimensions 38cm Length / 17cm Width / 12cm Depth
  • Total Volume 4L
  • Hydration Capacity 1.5L / 50 oz
  • Hydration System Elite Hydration Bladder with fixed Coupling Made by HydraPak®

Fit, Specs & Care

How To Set Up The Harness?

All of our NDM 1 products are unisex and are designed and tested for both men and women. To set up the harness follow the steps below.

  1. Put the backpack on. Adjust the horizontal chest straps to a comfortable length (The two "d-rings" allow you to change between a larger and smaller size). Use the outer ring for the large size and loop through both for the smaller size.
  2. Adjust the vertical shoulder straps (If needed) to adjust the height of the buckle, the center buckle should align around the height of your solar plexus. Do note that a few models like Race 2.0 and Outlander PRO does not have this setting due to their low weight.

Care Instructions

Packs

We want you to follow the instructions on the care label for each product. Care labels are typically found inside of the product. If you can’t see it, look again. If you still can’t see it, contact us.

STEPS
  • After every ride, empty the pack completely and brush clean soiled areas with soapy water.
  • Never put your pack into a washing machine or dryer, this damages the PU coating. Only hand wash.
  • The pack fabrics can’t be ironed.
  • Zippers must be kept clean for improved lifetime.
  • To store: close the pack and keep it in a dry, well ventilated place.

Hydration Systems

ELITE

Reverse by placing your hand in the bladder, grab the bottom, and pull it back through the top opening, just like turning a sock inside-out. The molded opening can also be flipped after the bladder body has been reversed. Then, throw it in the dishwasher or rinse with mild soap and water. Make sure to let the bladder dry out completely while reversed. 

Technology

Award winning NDM harness.

It is the unique shape and suspension of ourNo Dancing Monkey™ (NDM)harness systems that make our packs 100% bounce free. Its construction allows you to snug the packs really tight to the body, without affecting your breathing capacity or body movement. It is almost like wearing no pack at all.

NDM 1

The harness has our NDM tech buckle which easily clicks in place for an absolute snug and secure fit. It also comes equipped with integrated elastic straps that expand along with the chest during physical exertion, allowing a constant tight and compliant fit giving you freedom to breathe and move in action. It’s all super adjustable to give you that perfect tailored for you feel.

•  One-Click-Bundle

Secure. One hand operation.

•  4-point suspension

It allows freedom to breath and move.

•  Multi-size (dual) adjustment loops

Super adjustable from XS-M, M-XL, XXL

•  Adjustable Padded Velcro Straps

Full Description

Design & Action

Tearing through technical singletrack or grinding out long gravel races when you need more than just water means carrying extra layers, tools, and nutrition without the pack slapping your spine on every rock garden. The OUTLANDER XC Hydration Pack 4L is a mid-capacity mountain bike hydration pack built for riders who need room for a spare tube, energy bars, and a rain jacket while keeping the load locked down tight. USWE's patented No Dancing Monkey 1.0 harness uses a 4-point elastic suspension that clamps this pack against your back for zero-bounce stability when you're diving into steep descents or powering through punchy climbs. The stretchy harness wraps your chest without crushing your ribs, letting you suck in deep breaths while the pack stays glued in place.

Soft mesh shoulder and chest straps pump air across your torso to keep you from overheating when the sun is beating down and the trail keeps kicking up. At just 430g without the bladder, this lightweight hydration pack disappears on your back until you need to grab a gel or stuff a jacket into the main compartment. The included 1.5L Elite hydration bladder with fixed coupling keeps water flowing without leaks, and the hose routes cleanly over either shoulder so you can sip without taking your eyes off the trail.

Tech & Specs

  • NDM 1.0 harness: 4-point elastic suspension locks the pack to your torso for 100% bounce-free riding on rough terrain.
  • 4L total volume: Hauls a spare tube, multi-tool, snacks, and an extra layer without turning into a cargo mule.
  • 1.5L Elite hydration bladder: Fixed coupling system prevents leaks and delivers smooth water flow on long rides.
  • Ventilated mesh straps: Soft mesh across shoulders and chest keeps air moving to prevent sweat buildup.
  • 430g pack weight: Featherweight construction keeps the load minimal for fast cross country rides and gravel racing.

Fit & Kit

Dial in the fit by adjusting the elastic chest and shoulder straps until the pack sits high on your back without riding up into your helmet. The stretchy harness should feel snug but not restrictive, giving your lungs room to expand while keeping the pack stable through technical sections. After each ride, rinse the Elite hydration bladder with warm water and hang it to dry with the opening propped open to prevent mold. The pack is compatible with USWE's NDM 1 accessories like the Action Camera Harness, Organizer Pocket, and Chest Pocket for riders who want to customize their setup for bikepacking races or all-day mountain adventures.

FAQ

Can I fit a full-face helmet and knee pads in the 4L pack? +
No, the 4L capacity is designed for essentials like a spare tube, multi-tool, snacks, and a lightweight jacket. For bulkier gear like helmets or pads, check out the OUTLANDER XC 10L.
Does the hydration hose route on the left or right side? +
The hose routes cleanly over either shoulder, so you can set it up for left or right-side drinking based on your preference.
Will this pack work for trail running or is it just for biking? +
It's built specifically for mountain biking and gravel riding with a high-back fit that works with a helmet. Trail runners typically prefer a lower-profile vest design.
Can I add extra pockets or a tool pouch to this pack? +
Yes, the NDM 1.0 harness is compatible with USWE accessories like the Organizer Pocket, Chest Pocket, Phone Pocket, and Action Camera Harness for custom setups.
How do I prevent the bladder from getting moldy between rides? +
Rinse the Elite bladder with warm water after each ride, then hang it upside down with the opening propped open so it dries completely before storage.
Outlander XC Hydration Pack 2L

Outlander XC Hydration Pack 2L

$109.99
Outlander XC Hydration Pack 10L

Outlander XC Hydration Pack 10L

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