CORE WARMER

[ functional clothing lab ] Verified independent store

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Core Warmer Targeted insulation for your body’s core. Lightweight, windproof, and made for movement. What It Is The Core Warmer is an ergonomically shaped, down-filled front panel that warms your chest while leaving the back and shoulders open for ventilation and freedom of movement.It’s the perfect balance of warmth and breathability — ideal for active use, layering under a shell, or wearing with a backpack. Why? Targeted Warmth – Keeps your body front insulated without overheating your back. Ultra-Lightweight – Only 83–97 g, depending on fill type. Windproof Fabric – Blocks chill while staying soft and flexible. Full Vent Control – Two-way chest zipper lets you fine-tune airflow. Packable Design – Folds into its own pocket for easy storage. Quick On/Off – Magnetic FidlockⓇ waist buckle and snap neck strap. Made For Perfect for anyone who needs an extra bit of warmth without overheating the back — hikers, bikers, mountaineers, skiers, runners, backpackers, and travelers. When you wear a pack, your back is already warm (sometimes too warm). A full vest overheats — but the Core Warmer protects your chest from cold wind while letting your back breathe. It’s also a game changer for high-output movement — cycling, skiing, ice skating, or running — where wind cools your chest while your back stays sweaty. The Core Warmer balances that temperature difference for lasting comfort. Pocket System Two compartments: one open, one zippered. Double-sided zipper allows the Core Warmer to be packed into its pocket. Placement options: Chest pocket — stays clear of backpack straps. Belly pocket — top-access, perfect for cycling or quick stashing. Color options: Black or matching fabric color. Materials & Construction Main Fabric: nylon (smooth or micro-ripstop finish, depending on color). Insulation Options: 850 FP Goose Down – maximum warmth-to-weight. 700 FP Recycled Down (Re:Down®) – sustainable and responsibly sourced. Hardware: FidlockⓇ magnetic buckle (waist), KAM plastic snaps (neck). Zipper: YKK #3 coil with semi-locking sliders. Insulation Notes Recycled Down comes from Re:Down®, who recover and clean down from used bedding and sleeping bags. Some grey clusters may be visible under light-colored fabrics (e.g. Blaze Orange, Hot Pink). Higher Fill Power (FP) means better warmth with less weight. Color Options Black · Dark Grey · Blaze Orange · Olive Green · Burgundy · Turquoise · Purple (not shown on swatch) Weight Size Insulation Weight M 850 FP Goose Down 83 g / 2.9 oz M 700 FP Recycled Down 87 g / 3.0 oz Sizing & Fit Choose your usual T-shirt size, then check waist range: Size Waist Range XS 62–67 cm (24.5–26.4") S 66.5–76 cm (26.2–30") M 76–96 cm (30–35.4") L 86–103 cm (33.8–40.5") XL 95–123 cm (37.4–48.4") Fit tip: For a snug fit, choose a size where the minimum waist is equal to or slightly larger than your waist. Female model wearing Orange Core Warmer (172 cm, 76 cm waist) → size M Male model (188 cm, 98 cm waist) → size L Front panel height:XS+S – 42.5 cm | M – 46.5 cm | L+XL – 50.5 cm Need sizing help? → [email protected] Design Story The Core Warmer was created to solve a simple problem: how to keep your chest warm without overheating your back.Made from windproof nylon and filled with high-loft down, it shields the front of your torso from cold air while allowing moisture and heat to escape from the back. The two-way zipper offers fine control over ventilation, and the magnetic buckle system makes it easy to put on or take off — even over a shell or with a pack on. Each piece is made to order in small batches for maximum quality and minimal waste. Show more