An ideal trim-fitting technical foundation for maximized wicking performance, the Rho LT Zip is ideal for cool weather aerobic activity. Arcteryx lightweight fibers move moisture away from your skin and a silver fabric treatment reacts with sweat to cut down on backcountry odors. Keep your house key safely stowed in the laminated arm zip pocket for your morning jog. Arcteryx integrates no-lift gusseted underarms in the Rho LT Zip for extra freedom of movement. A warm addition to softshell layering systems. Unique plush texture, pullover style and gusseted underarms highlight the technical resumé of this efficient fleece layer. Athletic cut aids ease of mobility.