What Our Gearhead(R) Experts Are Saying:"I like using this on hot climbs where managing sweat really matters. It fits close without feeling restrictive, and the moisture-wicking fabric keeps things dry under a jersey. The longer cut is a nice touch-it stays tucked and prevents gaps when I'm moving around on the bike."We pull on the TDF Alpe D'Huez Baselayer when the ride ahead demands focus, effort, and comfort from the first pedal stroke to the summit. Santini designed this piece to honor one of cycling's most iconic climbs, and we feel that spirit every time we layer up for long, sun-soaked ascents. Built for high-output riding, the lightweight fabric wicks moisture efficiently to keep us dry when the effort ramps up. Its sleeveless construction enhances breathability, while the elastic, body-hugging fit moves naturally with us under a jersey. The elongated cut ensures consistent coverage in the riding position, so we stay comfortable and dialed in through every switchback and sprint.