NORDIC 4L Winter Hydration Pack

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.

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. 

Design & Action

Racing through frozen trails or pushing tempo on a ski marathon doesn't work if your hydration turns into a popsicle halfway through. The NORDIC 4L Winter Hydration Pack is a lightweight hydration backpack built for cross-country skiers, winter runners, and cold weather mountain bikers who refuse to let subzero conditions kill their flow. USWE's patented No Dancing Monkey 1.1 harness uses elastic straps and a technical NDM buckle to clamp this pack against your torso, delivering complete stability when you're skating through icy corners or bombing frozen singletrack. The revolutionary Thermo Cell insulation technology wraps the drink tube and bite valve in protective layers that prevent freezing even when temps drop below zero, keeping you hydrated through the coldest winter races and training sessions.

The slim 4L total volume keeps weight minimal while still hauling your essentials for shorter winter adventures. The included 2.0L Elite Hydration Bladder with Plug-n-Play coupling makes refills quick and hassle-free, while the insulated shoulder strap pocket keeps your drink tube accessible without exposing it to brutal wind chill. At just 300g without the bladder, this pack disappears on your back during fast-paced efforts where every gram counts and every second matters.

Tech & Specs

• No Dancing Monkey 1.1 harness with NDM buckle: Locks the pack to your body for absolute zero bounce on variable terrain and high-speed descents.
• Thermo Cell insulation technology: Shields the drink tube and bite valve from freezing in extreme cold, keeping hydration flowing when temps plummet.
• 4L total storage with 2.0L Elite Hydration Bladder included: Carries water, snacks, and a spare layer without adding unnecessary bulk for races and training runs.
• Lightweight construction at 300g (excluding bladder): Minimizes pack weight for fast-moving winter sports where speed and efficiency matter.
• Plug-n-Play coupling system: Allows quick bladder removal and refilling without fumbling with frozen connections mid-activity.

Fit & Kit

Dial in the fit by adjusting the elastic NDM straps across your chest and the waist belt until the pack sits high and tight against your back. The harness should feel snug but still allow unrestricted breathing during hard efforts. After each winter session, rinse the hydration bladder with warm water and hang it to dry completely before storage to prevent mold and keep the system fresh. The Thermo Cell insulation works best when the tube stays tucked close to your body, so route it through the shoulder strap pocket and keep it protected from wind exposure during long, cold rides and runs.