Outdoor Research Echo Long Sleeve Tee – Women's Footwear_Trail & Hiking the Helium is our go-to

the Helium is our go-to emergency layer for trail runners and thru-hikers who can't afford the weight

chafe-free fit — no extra layer needed

3-layer Proflex recycled polyester stretch fabric — 10

and hem retain shape and add durability through repeated wear

the Run Targeted Cushion Ankle Socks earn their place in any training rotation

Outdoor Research Echo Long Sleeve Tee – Women's Footwear_Trail & Hiking the Helium is our go-toBuilt for long days in Southern heat and sun, the Echo Long Sleeve is our pick for trail runners and hikers who want real UV coverage without cooking. AirVent moisture management pulls sweat away fast and the recycled polyester mesh dries quickly, even on humid days. ActiveFresh odor control keeps things honest on back to back efforts. UPF 1520 sun protection (light vs. dark colorways) shields skin on exposed ridges and open trails AirVent moisture