Alpinestars Ridge-2 Air Mens Motorcycle Riding Boots - 45 Upper constructed from a durable, technical synthetic textile and incorporates perforated microfiber mesh front and rear accordion flex areas for elevated levels of comfort and performance. The Ankle and Toe Box lining constructed in 3D mesh for more breathability. The Collar lining constructed of textile in order to guarantee additional comfort. New boot shaping delivers long-lasting comfort and incorporates ergonomic toe box construction for enhanced compatibility with bikes controls. Hot-melt reinforcement on shin plate for lighter weight and protection against impacts.