Moisture-wicking base layer with integrated D3O inserts The Women's Baseframe Pro provides moisture management, cooling, and protection in a single low-profile unit. Designed to be worn under your jersey, it provides EN1621-1 level 1 back and shoulder protection as you rip through the rough stuff. Its world-leading impact protection doesn't sacrifice your ability to move freely on the bike and is designed to contour and flex with your ride style.