DetailsLouis Garneau Men's Size Chart Season after season, the HTO 3 jersey answers the needs of mountain bike enthusiasts who like to ride with a hydration bag on their back. The back of the jersey is made with super light material as well as a wide mesh insert. The zircon fabric is super lightand will keep you cool even during the toughest climbs. You are now equipped for long rides but you will also be ready for the after-ride get-together with friends. The HTO 3 jersey also has everything of that casual after-ride tee.