ASSOS GT Winter Booties EVOTechnology overview The finer details FEATURED FABRICS NEOS Medium is the primary textile used, as its 3L softshell with PU bonded membrane breathes, blocks wind and water, and adds big doses of insulation to your feet and ankles. CONSTRUCTION FIT The booties feature a reverse camlock zipper, while our zeroCuff creates the smoothest transition possible between your legs and the fabric, furthering the aerodynamic profile.