What Our Gearhead® Experts Are Saying: "I wear the Alpenglow for big approach days and sunny belays because it actually feels cooler when the sun hits it. The mineral-based BD. cool fabric dumps heat, the hood fits cleanly under a helmet, and the Polygiene treatment keeps funk down on multi-day trips. It stretches, breathes, and dries fast—exactly what I want in a true sun hoodie."From exposed ridgelines to all-day cragging, the Black Diamond Alpenglow Hooded Long-Sleeve Shirt keeps us protected without overheating. The mineral-based BD. cool knit reflects heat to help regulate temps, while UPF 50+ coverage and an under-the-helmet hood guard our neck and face when the glare is relentless. Light, airy fabric wicks and dries in a flash, and Polygiene odor control keeps things fresh when we string together miles or pitches. A low-profile hip pocket stashes a card or key, and the easy stretch delivers unrestricted movement for high steps and reaches. It’s the sun hoodie we grab when the plan is “out early, back late.”