The Q36. 5 Base Layer 4 Plus Long-Sleeve is a cycling base layer in a soft, elastic fabric that stretches to the contours of the body for a next-to-body feel. A 100% seamless construction and an unhemmed finish add to that feel. What Our Gearhead(R) Experts Are Saying:"On long climbs, the different structures across the base layer handled sweat in the places I produce the most, so it stayed comfortable from start to finish."