Crater Lake

Mountain Hardwear

The Mountain Hardwear Crater Lake holds a near-universal consensus among trail gear reviewers as the benchmark for next-to-skin comfort in the sun hoodie category. Built for day hikers, long-distance backpackers, and casual outdoor enthusiasts, it prioritizes pure softness above all else. Its polyester and elastane jersey knit feels noticeably closer to an airy, broken-in cotton tee than a slick synthetic athletic layer. In warm weather, the Crater Lake excels at moisture dispersal. The lightweight fabric pulls sweat off the skin quickly and dries with minimal delay once exposed to a light breeze. The hood is cut to fit comfortably over a running cap or tucked snugly under a climbing helmet without excessive billow. Generous multi-directional stretch prevents binding across the shoulders, making it comfortable during high-mobility scrambles or all-day trekking under a loaded pack. The primary concession to this ultra-soft knit is long-term abrasion resistance. Independent testing reports consistently highlight that coarse rock, abrasive bushwhacking, and rough pack straps can cause the brushed surface to snag or pill faster than rugged woven nylon alternatives. It also lacks a zippered neck for mechanical venting when climbing steep grades in direct sun. **Highlights** - 88% polyester and 12% elastane blend with exceptional four-way stretch - Class-leading next-to-skin softness that minimizes chafing on long days - Well-fitted three-piece hood that stays secure in moderate winds - Discreet, low-profile thumbholes that keep sleeves over the wrists - Ultralight overall weight at under six ounces **Watch-outs** - Brushed knit fabric is vulnerable to pilling and snagging on rough rock - Lacks a neck zipper for dumping heat during heavy exertion - Holds slightly more moisture than pure open-mesh fabrics under intense sweating

Alpenglow Pro

Black Diamond

Designed squarely for alpine climbers, mountaineers, and rugged backcountry explorers, the Black Diamond Alpenglow Pro takes a structural, protective approach to sun defense. Instead of an ultralight running knit, it relies on a dense nylon-elastane blend built to survive abrasive granite pitches, sharp scrub brush, and heavy pack friction. In the field, reviewers frequently rate this hoodie at the top of the pack for high-elevation exposure. The dense weave creates an exceptional physical barrier against intense UV rays, while the deep quarter-zip front allows climbers to vent the chest thoroughly during arduous approaches. The hood cut is tailored specifically to stretch smoothly over a climbing helmet without pulling the cuffs up your forearms, and the integrated chest pocket adds convenient storage for small route essentials. The trade-off for this mountain-ready durability is weight and ambient heat retention. At roughly eight ounces, it is among the heavier sun shirts in the category, and its dense nylon construction can feel warm and clingy on windless, humid valley hikes below treeline. It also commands a significant price premium over entry-level synthetic alternatives. **Highlights** - Durable 92% nylon and 8% elastane construction built for rock abrasion - Deep quarter-length front zipper provides vital mechanical venting - Over-helmet hood profile maintains coverage without restricting head movement - Concealed zippered chest pocket for small essentials - HeiQ Pure odor control treatment helps mitigate multi-day stink - Low-profile thumb loops keep cuffs secure under climbing gloves **Watch-outs** - Substantially heavier than minimalist hiking and running sun hoodies - Dense fabric feels swampy in hot, humid, low-elevation conditions - Expensive compared to standard polyester trail layers

Crater Lake

Best for: Thru-hikers and trail runners seeking the lightest, airiest, and softest UPF 50+ protection for high-heat environments.

Alpenglow Pro

Best for: Alpinists, mountaineers, and trad climbers requiring an abrasive-resistant, helmet-compatible sun shirt that doubles as a light wind shell.