The Purple Mountain Observatory Orion 3L Check Jacket is a premium waterproof shell that proves technical outerwear doesn't have to look generic. Built around Toray's acclaimed Dermizax™ membrane in a full 3-layer construction, the Orion delivers the kind of weather protection and breathability that serious outdoor enthusiasts demand, wrapped in a distinctive check pattern that reflects PMO's design-led approach to functional clothing.
Toray Dermizax™ 3-Layer Construction
At the heart of the Orion is its Toray Dermizax™ fabric — a non-microporous, polyurethane membrane renowned for its exceptional breathability and consistent waterproof performance. Unlike traditional microporous membranes, Dermizax™ works through molecular-level moisture transmission, meaning it won't clog or degrade over time. The 3-layer bonded construction provides a robust, supple shell that feels refined rather than stiff, eliminating the need for a separate hanging liner.
Outstanding Waterproof and Breathability Ratings
With a hydrostatic head rating of 20,000mm, the Orion comfortably exceeds the threshold for reliable waterproof protection in sustained heavy rain and wind-driven conditions. Paired with a moisture permeability of 30,000g/m², this jacket excels during aerobic activities where internal moisture management is critical. Whether you're pushing uphill on a fell walk or navigating a rain-soaked commute, the Orion keeps you dry from both sides of the fabric.
Fitted Cut at 588g
The Orion features a fitted silhouette that provides a clean, streamlined look without restricting movement. At 588g, it carries enough substance to feel reassuringly protective while remaining light enough for all-day wear. The fitted cut also makes it easy to layer over midweight fleeces or lightweight insulation without excess bulk, ensuring versatility across seasons.
Versatile by Design
Purple Mountain Observatory has built its reputation on creating outdoor clothing that transitions seamlessly between environments. The Orion's check pattern is a bold statement of intent — this is a jacket designed for people who move between the mountains and the city without changing their wardrobe. It's equally suited to a wet day on the hills, a weekend camping trip, or everyday wear when the weather turns.
Key Specifications
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Fabric: Toray Dermizax™ 3-layer
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Fit: Fitted
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Weight: 588g
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Hydrostatic Head: 20,000mm
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Moisture Permeability: 30,000g/m²
