Smartwool Intraknit Seamless Long-Sleeve Top - Women's Light Gray, L

The Intraknit Seamless Long-Sleeve Top is knit as one continuous piece, so there's no seam construction to chafe or rub during a long, high-output effort. Ventilation is built directly into the knit rather than added as a separate panel, placed where the body actually needs to release heat instead of guessing at a universal spot. Underneath that construction, a blend of Merino wool, TENCEL Lyocell, and recycled polyester handles temperature regulation and odor resistance, built to work year-round rather than just in the cold. A regular fit keeps room to move without adding bulk under a jacket or on its own. What Our Gearhead(R) Experts Are Saying:"I run long efforts in this and never once think about where a seam might be rubbing, because there isn't one. The knit ventilates exactly where I run hot, so I stay comfortable through the whole distance instead of adjusting my layers halfway through."