An all-day trail loop of climbs and flowy sections keeps the temperature shifting, and the Trail Merino Tank is a midweight merino tank top that regulates it naturally. Merino resists odor, so this mountain bike tank top stays fresh through the day, and it pairs with trail shorts or pants. What Our Gearhead(R) Experts Are Saying:"On technical descents with roots and rocks coming fast, the nylon interwoven with the merino stood up to brushes with branches. The tank looked the same at the bottom as it did at the top."