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Men's Intraknit™ Thermal Merino Base Layer Bottom Description Key Features Specifications Care Start your layering system with our most innovative foundation to date; our Intraknit™ collection. Our Men's Intraknit™ Thermal Merino Base Layer Bottom puts warmth first, while seamlessly knit mesh ventilation helps keep you dry and comfortable. Our revolutionary 3D mapping provides maximum mobility so nothing slows you down. Gear up to take on any weather with these men's Merino wool pants. Intraknit™ 3D-Knit Thermal Construction Intraknit™ technology: insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort. Rather than sewing separate panels onto a base fabric, the Intraknit™ knit builds the insulation, breathability, and stretch zones directly into the fabric itself. The result is a single piece of knit that warms where the body is static, breathes where the body works, and stretches where the body bends — with fewer seams and fewer cold spots than a sewn-together equivalent. Merino Sport Yarn Blend — Heavyweight 52% Merino Wool, 44% Polyester, 2% Elastane, 2% Polyamide. Merino Sport yarn wraps soft Merino fiber around a durable polyester core — the Merino delivers the natural temperature regulation and odor resistance; the polyester core adds the abrasion toughness and faster dry time a deep-cold-weight base layer needs. 2% elastane gives the 3D-knit articulation the stretch recovery across the hip, knee, and ankle. Heavyweight — Built For Deep Cold Heavyweight positions this bottom as the right choice for sub-freezing days, lift-served skiing, ice climbing, mountaineering, and long static belay sessions — not shoulder-season high-output activity. Warmer than the All-Season Intraknit bottom, heavier than the midweight Classic Thermal 250g/m². The right weight when a midweight would soak through before lunch on a -10° lift ride. Seamlessly Knit Mesh Ventilation Seamlessly knit mesh ventilation — the breathability is built into the knit itself rather than added as sewn-on mesh patches. Heavy warmth with high-output breathability in a single fabric, no glued-in ventilation strips, no bulky seams that cold-spot or wear through. The mesh knit breathes where the body needs it and insulates where it doesn't. 3D Mapping For Near-Custom Fit & Movement 3D mapping results in near custom fit and freedom of movement. The knit is tailored to the body's natural articulation points — it relaxes where the leg bends (hip, knee, ankle) and compresses where the leg is straight (quad, calf). Fewer hot spots at the articulation points, less bunching under outer layers, and a base layer that moves with the body rather than fighting it. Mid-Rise Waist Fitted with a mid-rise waist that sits between a low-rise hip-hugger and a high-rise waistband — the right rise for layering under hiking pants, ski pants, or snow bibs without the waistband rolling down at the hip or digging in at the rib. The mid-rise also keeps the base layer covered when the jacket or shell rides up on a steep descent. Men's-Specific Slim Fit — Inseam 28.75" (Size M) Our slim fit is intended to follow the contours of the body without excess bulk. Engineered in men's proportions — broader through the hip and thigh, with a 28.75" inseam on a size medium that hits at the right spot above the ski-boot cuff. Layers cleanly under hiking pants, ski pants, or running tights without bunching at the knee or ankle. Multi-Activity Versatility Built for the wide range of deep-cold activities where warmth is the priority but high-output movement still demands breathability — alpine touring, ice climbing, lift-served skiing, mountaineering, winter trail running, and backcountry hut trips. The Merino Sport yarn blend handles the cold-to-warm swings without the clammy chill a pure synthetic would develop when you stop moving. Technology Intraknit™ 3D-Knit (Insulation, Articulation, Ventilation); Merino Sport Yarn; Body-Mapped Ventilation General Product Men's Intraknit™ Thermal Merino Base Layer Bottom Fit Slim fit (intended to follow the contours of the body) Category Thermal Base Layer Bottom (Heavyweight, 3D-knit) End Use Deep-Cold Activity, Winter Layering Technology Intraknit™ 3D-knit (Insulation, Articulation, Ventilation zones); Merino Sport yarn; Body-Mapped Ventilation Gender Men's Available Sizes S, M, L, XL, XXL Materials & Construction Fabric Weight Heavyweight (Thermal — built for deep cold) Fabric Composition 52% Merino Wool, 44% Polyester, 2% Elastane, 2% Polyamide. Exclusive of Decoration. Knit Construction 3D-knit Intraknit™ — body-mapped insulation, articulation, and seamlessly knit mesh ventilation Waistband Mid-rise waist Inseam 28.75" (73 cm) on size medium Seam Construction Minimal seams (3D-knit construction eliminates most traditional seam lines) Country of Origin Made in India Washing Machine wash cold on a gent...
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An open fabric with visible holes, made to let air through.
It's the most breathable common fabric and dries fast, but it's not warm and it snags more easily than a closed knit.
Read from how the product describes its fabric. These are typical for this kind of fabric, not tested on this item.