The Isotherm Vest is a lightweight synthetic vest that's super warm and extremely breathable. Ideal for active use in cold conditions.
Time for due diligence - get moving in the Isotherm Vest. Filled with Polartec Alpha active insulation, this vest allows for a balance of breathability and warmth for moving fast in cold conditions. Zonal mesh lining allows for better air movement; single chest pocket stores cards or keys.
||||Pertex Quantum Fabric - Light enough to enable down to loft better, comfortable enough for next-to-skin. Click Logo to read more...|
||||Polartec Alpha, Overheating is Underperforming - So unlike traditional synthetic fill or down, Polartec Alpha allows a free exchange of air to keep you warm, comfortable and focused. Developed for U.S. Special Operations and now available for outdoor enthusiasts, it takes performance fabric—and you—to a totally new place. Click the Logo to read more...|
The Isotherm insulated Vest keeps you warm and dry, weather your hiking in cold conditions or climbing in the mountains. The outer shell is constructed from ultralight and ripstop Pertex Quantum fabric which provides excellent down and wind proof protection. The Jacket is filled with Polartec Alpha synthetic insulation which provides warmth without the weight and is extremely breathable, allowing you to climb comfortably while still keeping you warm while you're belaying. The elasticated arm holes will also ensure freedom of movement when you're reaching for the anchors.
The Jacket features an AirExchange and zonal mesh lining that will help the jacket to breathe and has a bonus of feeling soft against your skin. There are 2 good sized hand warmer pockets with a a small chest pocket for storing a phone or other valuables. The elastic drawcord hem can be adjusted to prevent any lift while preventing cold air from getting in. The Isotherm Vest is ideal for keeping warm during active use without over heating.
- Reviewed by Ultralight Outdoor Gear