Constructed for the most extreme conditions, the Lake MXZ400 Winter MTB Shoes forge ahead with maximum comfort in cold weather and provide double the warmth and protection of the MXZ303. Pittards WR100 leather upper with neoprene cuff and 2-piece lace overflap allow for maximum waterproofing, durability and ankle fit. Soft Outlast liner regulates the inside temperature while the 3M Thinsulate toe box and Thermosol insole delivers incredible warmth. Aggressive Sub Zero rated rubber outsole offers exceptional grip while cycling and features Ice grip inserts that perform equally as well when you're hoofin' it off the bike. Dual BOA push/pull lacing system with integrated heel and pad straps will keep your foot in its most powerful position while providing easy adjustment and a secure, pressure-free fit.