Under Helmet hoods, hats and other headwear are designed to be worn comfortably under a helmet during climbing, snowsports or cycling. A less obtrusive alternative to over-helmet designs, they are well-suited to lightweight windproof and waterproof outerwear, and base layer headwear designs.
UPF is the Ultra-Violet Protection Factor that you receive from your clothing. The higher the number the more protection from the suns harmful rays you achieve.
