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What is the OMM Men's Mountain Core Smock?
The OMM Mountain Core Smock Insulation is a lightweight, breathable, and super-cosy layer for active use in mixed weather conditions. Whether heading out for a cold morning run or needing something to keep you warm after a tough trail session, this smock is your grab-and-go solution for reliable warmth and comfort.
What is it made of?
PrimaLoft Active Insulation
At the heart of the Mountain Core Smock lies PrimaLoft Active, an insulating fabric designed for dynamic performance. This insulation is created by weaving ultra-fine synthetic plumes through a supportive knitted mesh, forming a high-volume structure that mimics the warmth-trapping capabilities of fleece but at less than half the weight. With a density of 125g/m², the insulation used in this smock is highly efficient.
Unlike traditional fleece or down, PrimaLoft Active maintains its insulating properties even when exposed to moisture. Its hydrophobic fibres resist water absorption and dry quickly, ensuring the wearer remains warm and comfortable regardless of the weather conditions.
Flexile Shell
The outer shell of the Mountain Core Smock is crafted from Flexile, a proprietary stretch nylon and spandex blend. This fabric excels in offering wind resistance and a degree of water resistance while still allowing for excellent breathability. Its 4-way stretch construction ensures ease of movement during high-output activities such as trail running, climbing, or ski touring.
While not fully waterproof, Flexile performs great in mixed conditions where versatility and comfort are key. A Durable Water-repellent (DWR) coating helps shed light rain or snow, extending the garment's functionality in varied environments.
Interior Lining: Fast-Wicking and Soft Against the Skin
The smock's inner surfaces are designed for comfort and performance, featuring fast-wicking, breathable materials that harmonise with the insulation and shell layers. This lining helps move moisture away from the body quickly, supporting temperature regulation and reducing post-exertion chill.
Soft to the touch, the lining enhances next-to-skin comfort, allowing the smock to be worn comfortably over a base layer or even a t-shirt during transitional weather.
Environmentally Responsible
The Mountain Core Smock doesn't just perform in the wild — it respects it, too. Its insulation, with 64% of its fibres derived from post-consumer recycled materials, helps to reduce waste without sacrificing warmth or performance. In addition to its recycled content, this insulation is both Bluesignand OEKO-TEX certified, meaning it meets stringent global standards for environmental responsibility and consumer safety. The bluesign system ensures that harmful substances are eliminated from manufacturing, focusing on resource efficiency and worker well-being. Meanwhile, OEKO-TEX certification guarantees the fabric is safe next to the skin and tested for substances that could harm your health.
What are its features?
Light, packable, and purpose-built for active mountain use, the Mountain Core Smock offers reliable warmth, breathable performance, and clever features to keep you moving comfortably.
Stretch Panelling
The Mountain Core Smock is made to move with you. Integrated stretch panelling offers dynamic freedom during high-output activities, whether powering up steep trails or reaching a scramble. The fit stays close and comfortable, never restricting your stride or swing.
Lightweight, Packable, Ready to Go
Weighing just 355 grams, the Mountain Core Smock delivers serious warmth and weather protection without the bulk. It's light enough to carry unnoticed in your pack and warm enough to throw on when you stop moving.
Handwarmer Pocket That Doubles as a Pillow
The large front fleece-lined through-pocket is a standout feature, perfect for warming cold hands before and after a session. The pocket is practical for quick access and reverses to form a fleece pillow—ideal for impromptu rest stops or travel downtime.
Details That Matter
A YKK® quarter-length zip makes it easy to pull the smock on or off quickly and provides instant ventilation when things heat up. There's also a discreet but functional key clip, keeping your essentials secure during runs or fast-paced hikes where every detail counts.
Features:
- PrimaLoft Active insulation
- Flexile stretch shell
- Quarter-length YKK zip
- Wind resistant
- Large fleece-lined front through-pocket
- Pocket reverses into a pillow
- Key clip
- Breathable and quick drying
- Warm when wet
- DWR treatment