The Active Fleece Tight pairs a brushed Merino wool interior against the skin with a recycled polyester exterior facing outward, built specifically for cold starts that turn into hard efforts. That two-zone construction holds warmth during a slow warm-up without trapping heat once the pace picks up, so the tight adjusts instead of working against the body. A mid-rise waist and four-way stretch keep the fit close and mobile, while a drop-in hand pocket and secure back pocket hold the essentials during a run or ride. What Our Gearhead(R) Experts Are Saying:"I start my cold-morning runs shivering less than five minutes in, but I don't hit that clammy, overheated wall by mile three the way I do in a straight synthetic tight. The Merino side keeps doing its job even as I warm up, instead of turning into dead weight once I'm working hard."