evo.com | Outdoor Research Activewear Tees > ActiveIce technology sounds like marketing spin until it kicks in on a scorching climb, the fabric actually cools as your body heats up. The Outdoor Research ActiveIce Spectrum Sun Hoodie backs that cooling treatment with UPF 50+, a quick-drying stretch poly blend, and thumb holes that keep sun coverage locked in from trailhead to summit. bluesign(R) approved 94% Polyester / 6% Spandex Weight 7.41 oz/ 210 g Center Back Length 69.9 cm / 27.5 in 3-Panel Hood Chafe-Free Design with Dynamic Reach | Women's Outdoor Research ActiveIce Spectrum Sun Hoodie 2027 - Medium Blue | Spandex/Polyester