The Sense Merino Long-Sleeve Top pairs 37. 5(R) Technology with merino wool for a fabric that dries five times faster than similar materials, so it keeps pace as effort builds instead of holding onto sweat. The regular fit is cut for comfort and freedom of movement, making this as much a go-to layer for the day around a run as it is for the run itself. What Our Gearhead(R) Experts Are Saying:"I got caught in a downpour halfway through a run and expected to be stuck in a soaked shirt for the rest of the day, but it had mostly dried out by the time I got home and changed. I ended up wearing it the rest of the afternoon without a second thought."