From two Floridians who love exercising outdoors but kept getting sunburned, BLOQ makes workout gear with an Ultraviolet Protection Factor of 50, blocking 98% of UV radiation (average tees have a UPF of about 5). The shirts're also moisture-wicking, have a key/card/cell phone-securing pocket that's cut tight, angled, and elevated to prevent flopping around, and flat seams to eliminate chaffing against parts of your body that're doing the same.