High-Performance Sun Protection for Demanding Alpine Ascents

The Arc'teryx Women’s Sunna Hoody is a technical, lightweight sun layer engineered for strenuous hikes, ridge scrambles, and high-output activities under intense solar exposure. Crafted from an innovative Japanese circular knit waffle fabric, this hoody actively pulls moisture away from the skin to speed up evaporation and keep you cool when pushing up steep terrain. With a certified UPF 50+ rating, it provides essential, all-day shade above the treeline, eliminating the need for constant sunscreen reapplication during long mountain days.

Designed specifically to handle the physical demands of backpacking and mountaineering, the Sunna features offset shoulder seams that sit flat to prevent chafing and pressure points under heavy pack straps. The low-profile, close-fitting hood easily accommodates a climbing helmet or fits snugly on its own to shield the neck and ears, while long sleeves provide extended wrist coverage. The premium four-way stretch material allows for a completely unrestricted range of motion when reaching for handholds or navigating technical trail sections, making it an indispensable piece for hot-weather backcountry travel.

Key Features:

• UPF 50+ Solar Protection: High-level ultraviolet protection shields sensitive skin from intense, high-altitude sun exposure.
• Waffle Knit Moisture Management: Specialized circular-knit construction rapidly wicks sweat away from the body to deliver dry, cooling comfort.
• Pack-Friendly Offset Seams: Shoulder stitching is strategically moved out of the way to eliminate friction and rubbing under backpack shoulder straps.
• Four-Way Stretch Mobility: Highly flexible performance textile ensures completely unrestricted arm and torso movement during dynamic tasks.
• Close-Fitting Sun Hood: Low-profile design provides complete neck and head coverage and layers comfortably under alpine helmets or hats.
• Eco-Conscious Materials: Built utilizing high-quality recycled polyester fibers to reduce the overall environmental and manufacturing footprint.
• Ultralight & Packable: Compresses down incredibly small, taking up minimal space in a running vest, climbing pack, or travel bag.