Outdoor Research ActiveIce Spectrum Sun T-Shirt – Men's Footwear_Trail & Hiking and flat seam construction mean

and flat seam construction mean nothing binds or chafes when you're moving hard

while set-in sleeves make it pack-friendly and comfortable under a shoulder strap

Stretch fabric and soft elastic waistband move with you and stay put without digging in

Works as a standalone warm-weather tee or a base layer under fleece or a jacket

Water-resistant nylon shell keeps moisture out when the trail gets ugly

Outdoor Research ActiveIce Spectrum Sun T-Shirt – Men's Footwear_Trail & Hiking and flat seam construction meanWhen the miles stretch long and the sun is punishing, the ActiveIce Spectrum is our go to sun shirt for trail runners and hikers who won't back down in Southern heat. ActiveIce fabric uses evaporative cooling to actively pull skin temperature down as you sweat, while UPF 50+ blocks harmful rays on exposed ridges and open trails. A relaxed athletic fit handles everything from long trail runs to backcountry hunts. UPF 50+ sun protection blocks harmful