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What is the OMM Mountain Raid 233WP Sleeping Bag?
The Mountain Raid 233WP is OMM's all-weather sleeping bag, built for lightweight missions where kit has to work hard and weigh little. It combines premium synthetic insulation with a fully waterproof, breathable shell. Designed for mountain marathons, bikepacking, and wet-weather expeditions, it ensures comfort and protection in a compact package.
What is it made of?
PrimaLoft Gold with Cross Core Insulation
At its core, the Mountain Raid 233WP uses PrimaLoft Gold Cross Core, OMM's highest-performing synthetic insulation. With mapped fill weights of 100g/m² on the base and 133g/m² on the top, it delivers targeted warmth where you need it most. The fibres trap heat effectively, resist moisture, and continue insulating when wet—ideal for unpredictable conditions.
PointZero H2O Shell
The outer fabric is PointZero H2O, a superlight nylon with a 10,000mm hydrostatic head and 10,000g/m² breathability. Fully waterproof yet breathable, it sheds rain, snow, and condensation while maintaining comfort inside. The fabric also features a PFC-free DWR, removing harmful "forever chemicals" from production and lowering environmental impact.
Sustainability Focus
The insulation is made with 90% post-consumer recycled content, reducing waste without sacrificing performance. Combined with the PFC-free shell, the Mountain Raid 233WP is one of OMM's lowest-impact sleep systems.
What are its features?
Waterproof Sleep System
The Mountain Raid 233WP is built around a fully waterproof shell, offering complete confidence in wet and unpredictable conditions. Whether tucked under a tarp, sheltered in a tent, or sleeping directly under the night sky, the waterproof design keeps you protected from moisture without needing an additional bivvy bag.
Efficient Insulation Mapping
OMM has engineered the insulation distribution to maximise warmth while keeping weight to a minimum. Heavier insulation is placed on top where heat loss is greatest, while lighter insulation underneath reduces bulk without sacrificing thermal performance. The mummy shape and adjustable hood further lock in warmth, ensuring efficiency in demanding conditions.
Shaped Footbox
The ergonomically designed footbox allows for a more natural sleeping position and prevents insulation compression around the feet. This design retains warmth more effectively where circulation is most vulnerable to cold and provides comfort during extended use. By shaping the foot area, OMM ensures that warmth is not sacrificed for packability.
Lightweight and Packable
Weighing just 640g and compressing down to 27 x 17cm, the Mountain Raid 233WP strikes the perfect balance between performance and portability. It's an excellent choice for fast-moving, minimalist adventurers who value compact gear that won't weigh them down, making it especially suited to multi-day races and alpine missions.
Functional Details
Thoughtful design elements make this sleep system highly practical in the field:
- Half-length YKK zip reduces cold spots while allowing quick entry and exit.
- Hang loops simplify drying after wet nights.
- Stitched-through inner with loose-laid outer construction enhances breathability while ensuring durability.
These features combine to create a reliable system built for efficiency, resilience, and comfort in challenging environments.
Features:
- PrimaLoft Gold Cross Core insulation (100g/m² base, 133g/m² top)
- PointZero H2O waterproof shell (10,000mm HH / 10,000g/m² breathability)
- Fully windproof and waterproof
- PFC-free DWR
- 90% post-consumer recycled insulation content
- Mummy shape with adjustable hood
- Shaped footbox for comfort
- Half-length YKK zip with draft flap
- Loose-laid outer, stitched-through inner
- Fast drying, easy care
- Packs into 27 x 17cm sack
- Hang loops at base