The Outdoor Research Men's Echo Short Sleeve T-Shirt is a premium technical garment for anyone seeking exceptional lightness, breathability, and unbeatable comfort during high-intensity, four-season activities. Weighing in at a featherlight 90 g, it practically disappears on the body, providing complete freedom of movement during trail running, hiking, climbing, or as an essential base layer for colder adventures.

It is crafted from eco-friendly 100% recycled polyester with a bluesign® certification and an ultralight knit density of 78 g/m². Superior climate regulation is delivered by the AirVent™ mesh technology, which allows continuous airflow and lightning-fast moisture wicking away from the skin. The fabric is treated with proven ActiveFresh™ odor control, reliably neutralizing microorganisms and preventing odors even over multiple consecutive days of wear.

The shirt features a well-thought-out athletic fit (Trim Fit) and a back length of 71.1 cm that hugs the body smoothly, preventing the fabric from bunching under a backpack. Comfort is enhanced by soft flatlock seams that eliminate chafing against the skin, along with built-in sun protection rated at UPF 15. For added safety in low-light conditions, it includes a subtle reflective logo.