the OMM Phantom 25

the OMM Phantom 25

See our entire range from the OMM here!

The OMM Phantom 25 is a high-capacity 25-liter VestPack , designed for ultra-marathons, adventure racing and multi-day events where stability on the run and quick access to gear are essential. It combines the volume of a backpack with the accessibility of a race vest , making it ideal when regular stops are not an option.

At the heart of the Phantom 25 is OMM's Phantom Suspension system, featuring a unique 7-point harness that attaches the pack to the runner's spine via a narrow yoke behind the neck , instead of placing weight on the shoulders. This frees up the shoulders, improves running economy and provides exceptional carrying stability even on technical terrain.

Two shock-absorbing springy cables over the shoulders work in tandem to reduce side-to-side rocking and keep the pack aligned with the spine. Double V-shaped waist anchors hug the hip and control bounce and sway on uneven ground. Vertical movement is counteracted by two equalized anchor points with a common adjuster that creates a stable Y-shape against the lower back.

The Phantom 25 is built with durable Cordura nylon for light weight and durability. The pack offers ample organization: large pockets in the belt, generous mesh pockets, front bottle pockets and hydration system compatibility (up to 3L) . The back system can be combined with OMM's DuoMat for extra rigidity and comfort when carrying heavier loads.

Features & Benefits

25 L capacity – perfect for ultra, fastpacking and multi-day events

Phantom Suspension (7-point harness) – extreme stability and free shoulder movement

VestPack design – backpack volume + vest accessibility

Shock-absorbing shoulder straps & V-waist attachments – control bounce and swing

Cordura nylon – light weight, high durability

Hydration ready (up to 3L) – ready for long stages

Features

Narrow yoke behind the neck for back-centered load

Two shock-absorbing spring-loaded shoulder straps

Double V-shaped waist anchors

Smoothed anchor points that reduce vertical movement

Large belt pockets with zipper

Front bottle pockets (750 ml compatible)

Large rear mesh pocket

Compatible with OMM DuoMat / back system

Reflective details

Technical specifications

Capacity : 25 liters

Lean weight : approx. 505 g

Full weight : approx. 725 g

Materials : Cordura® (nylon), 3D‑airmesh

Back length : adjustable approx. 46–54 cm

Hydration : compatible with 3 L hydration bladder

Fit : Unisex (OZ)

Suitable for

Ultra races, adventure racing (e.g. BAMM/OMM-like formats), fastpacking and long mountain days where you need high capacity, maximum stability and access on the move .

Care instructions

Hand wash or rinse with lukewarm water to remove dirt and salt. Air dry. Regular cleaning will extend the life of the product.

Never tried OMM before or just need a little help finding the right size? You can find size charts and help finding the right fit HERE!