chris grenier pro model for long days in the park . chris grenier and thirtytwo offer the diesel hybrid, a boot with traditional lacing and the boa® hybrid instep fit system for extra heel hold. the 3d-moulded tongue and its medium flex make it the perfect freestyle boot for kickers, rails and creative lines. outer bootthe performance sole with a low profile, offers improved grip thanks to the aggressive tread. the 3d moulded tongue leaves hardly any pressure points and ensures a pleasant and comfortable ride. a free-moving shank allows the upper and lower zones of the boot to flex independently, minimising shell deformation and maximising heel hold and response. the performance backstay offers absolute durability by reducing abrasion in the highback area.linerthe team fit liner has a medium flex, improved comfort and support. you can adjust the fit perfectly to your feet with the additional team internal harness. lined with intuition foam, this liner is 100 % heat moldablelacing systemthe traditional lacing system is and remains one of the best and most reliable lacing systems for snowboard boots. many riders continue to trust the classic lacing and appreciate the easy swap-out when the lacing breaks. the separate boa® hybrid m+2 system provides additional heel hold.