Mountain Hardwear Women's Crater Lake Heavyweight Half Zip - UPF 50+, Mint Odor Control, Lapis Dusk XL

The sun doesn’t take a break from the outdoors, and neither should you. The Crater Lake Heavyweight Half Zip from Mountain Hardwear brings together sun protection, plant-based odor control, and warm, breathable fabric in a versatile layer. With UPF 50+ coverage, it helps shield you from UVA and UVB rays on bright dawn patrols, snowfields, and sunlit summits. HeiQ Mint odor control helps keep the top feeling fresh on longer days, while the soft grid fleece backing adds warmth without bulk, making it a dependable choice from early morning chill to late afternoon warmth.

Design-wise, you’ll find a smooth-face knit with two-tone color options and a cozy fleece backer. The half-zip opening offers easy on/off and adjustable venting as temperatures swing, and the low-profile thumbholes stay comfortable and unobtrusive whether you’re gripping a trekking pole or reaching for alpine routes.

Smart warmth and versatile layering

The plush grid fleece backing traps warmth while maintaining breathability, so you stay comfortable as you move from shade to sun. Wear it solo for shoulder-season adventures or layer it under a shell for spring skiing and sunny high-alpine travel. The top is designed to adapt to changing conditions, providing reliable coverage without adding excess bulk.

• Broad spectrum protection against UVA and UVB rays
• HeiQ Mint odor control technology derived from plants
• Smooth face fabric with two-tone color options and fleece backer for extra warmth
• Half zip great for easy on/off and venting
• Low-profile thumbholes for secure, comfortable wear

For morning hikes, alpine approaches, or travel days with variable weather, this layer shines as a dependable component of your kit. Wear it by itself when the air is crisp and the sun is steady, or pair it with a shell for additional protection on longer climbs. Its combination of sun shielding, odor control, and warmth makes it a practical companion for multi-day trips and weekend getaways alike.

Designed to travel well, the Crater Lake Half Zip layers smoothly under other pieces and dries quickly after a damp hike. If your outdoors routine shifts with the seasons, this piece offers adaptable warmth and protection for dew-drenched trails and high-alpine sun alike.