Strength Without Weight The OMM Aether redefines what a true ultralight shell can be. Built from Dyneema — one of the strongest fibres on Earth — it brings mountain-proof protection to a featherlight jacket. It’s the kind of piece that makes you rethink what “lightweight” means: tiny in the pack, tough in the storm, and ready for it all.
Product Ratings
Waterproof
Waterproof Really Waterproof
Breathability
Breathable Ultra Breathable
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What Is the OMM Women’s Aether Jacket?
The Aether Women’s Jacket is a high-performance waterproof hard shell designed for mountain running, fastpacking, and ultra-distance challenges where low weight, durability, and protection are essential. Weighing just 200g, it redefines what’s possible in an ultralight shell by combining full storm protection with the exceptional tensile strength of Dyneema, one of the world’s strongest fibres. Engineered for runners facing rapidly changing mountain weather, the Aether provides a protective barrier against wind and rain without restricting movement or trapping heat. Its minimalist construction and performance fit minimise excess fabric, enabling complete freedom and efficiency on the move.
What Is It Made Of?
3-Layer Dyneema Composite Fabric
The Women’s Aether Jacket uses a 3-layer Dyneema and nylon composite engineered for outstanding durability, waterproofing, and breathability in an ultralight build. Dyneema fibres are up to 15times stronger than steel by weight, giving the jacket exceptional tear resistance and long-term reliability while keeping it featherlight.
The fabric delivers a 20,000mm hydrostatic head waterproof rating and 20,000g/m² breathability, ensuring protection from heavy rain while efficiently venting heat and moisture during intense activity. A smooth nylon outer layer sheds water and increases abrasion resistance, while the Dyneema reinforcement ensures consistent performance in extreme environments.
The jacket is fully PFC- and PFAS-free, reflecting OMM’s commitment to sustainability and technical innovation. Its durable Dyneema composite construction increases longevity, reducing environmental impact over time.
What Are Its Features?
Lightweight Weather Protection
At only 200g, the Women’s Aether Jacket delivers complete protection from harsh weather without compromising speed or mobility. Its 3-layer construction blocks wind and rain while maintaining breathability and natural movement—ideal for summits, ridgelines, and ultra-distance races.
Performance Fit
A women’s-specific performance fit contours naturally to the female body for improved comfort and mobility. The ergonomic cut minimises bulk while providing room for light layers, ensuring full freedom of movement in technical terrain.
Flatlock Seams
Flatlock seams reduce bulk and prevent chafing during prolonged efforts. This construction method also boosts durability, helping the jacket maintain comfort and structure during extended use with vests or packs.
Thumb Loops
Integrated thumb loops keep sleeves in place and provide extra warmth and coverage for the hands in cold, wet conditions. They ensure secure layering and prevent sleeve migration during fast movement.
Secure Zip Pocket
A zipped chest pocket offers quick, reliable access to essentials such as gels, cards, or keys. A water-resistant YKK zip protects contents and remains functional even in heavy rain or when wearing gloves.
YKK Zips
Premium YKK zippers deliver dependable, snag-free performance in all weather conditions, ensuring long-term reliability in mountain environments.
Features:
- 3-layer Dyneema composite waterproof fabric
- 20,000mm waterproof / 20,000g/m² breathable rating
- Fully windproof construction
- Weighs just 200g
- Flatlock seams for reduced bulk and irritation
- Thumb loops for secure fit and extra protection
- YKK zips for durability and reliability
- Secure zipped chest pocket
- Women’s-specific performance fit for dynamic movement
- PFC- and PFAS-free construction
OMM Aether Jacket Review The Aether is one of those jackets that feels too light to take seriously — until you’re halfway up a ridgeline in a downpour and realise you’re bone dry. The Dyneema fabric has a reassuring crispness; you can feel the toughness even though it barely weighs anything. It packs down to the size of a fist and just disappears in your pack. On the move, the fit is spot on — no flapping, no cling, just total freedom. It simply does what it’s meant to: protect, breathe, and perform.
Does It Feel Noisy or “Plasticky”? Not at all. Despite the Dyneema strength, the Aether feels soft and pliable once it’s on. It has that crisp, high-performance texture, but without the distracting “crinkle” that some ultralight shells suffer from. It moves with you and feels surprisingly natural, even layered over a mid-weight top.
Suitable for All-Day Mountain Wear? Yes — and that’s what’s so impressive. It’s built for high-output movement, but the breathability and comfort make it easy to wear for extended hours in wet, windy conditions. It’s not just an emergency shell for the bottom of your pack — it’s a serious mountain layer for long days, big climbs, and unpredictable weather.
FAQ
Is the Aether Jacket waterproof or water-resistant?
Fully waterproof. The 3-layer Dyneema composite fabric achieves a 20,000mm hydrostatic head rating, delivering proper storm protection.
Can I run comfortably in it?
Yes. It’s designed for mountain running and high-output movement. The articulated cut and low weight keep it comfortable and non-restrictive on the move.
Does it pack down small?
Very. The Aether compresses into a hand-sized bundle, ideal for stashing in a vest pack or side pocket when the weather clears.
How durable is the fabric?
Extremely. Dyneema is incredibly strong for its weight, giving the jacket excellent tear and abrasion resistance despite its ultralight build.
Is it breathable enough for racing?
Yes. The 20,000g/m² breathability rating helps moisture vapour escape efficiently during long efforts and steep climbs.
Is it suitable for year-round use?
Yes. It’s ideal from spring through autumn, and it works well as a storm shell in winter when layered over insulation.
Are the seams fully sealed?
Yes. OMM uses flatlock seams for comfort and durability, and all seams are fully taped for complete waterproof protection.
Can it be used with a running vest or pack?
Definitely. The smooth Dyneema face fabric resists abrasion, and the low-bulk seam construction helps it sit comfortably under or over a pack.