Lake MXZ400 Winter Cycling Boot – Waterproof Leather, Thinsulate Insulation – Black

The Lake MXZ400 takes winter cycling boots to the next level. Built on a Winter Extreme last and featuring double the insulation of previous models, it’s designed as a new standard for extreme cold‑weather cycling footwear. The upper uses water‑resistant full‑grain leather combined with abrasion‑resistant, waterproof leather for long‑term durability and cold‑weather performance. A seam‑taped membrane bootie, waterproof membrane, and protective leather over‑flap with reflective panels help seal out snow and slush while adding visibility. Inside, the boot is 100% lined with temperature‑regulating fabric, backed by Thinsulate insulation and a composite six‑layer footbed that forms a temperature‑isolating barrier between you and the ground—keeping warm air in and cold air out. Underfoot, Lake’s Enduro sole with ICE LOCK anti‑slip tread inserts (micro‑glass‑fiber lugs) delivers confident traction in icy, mixed‑surface conditions, while the 50/50 sole rating balances on‑bike efficiency with off‑bike comfort. Fit is dialed in via dual BOA dials—tongue‑mounted and side‑mounted—with dual Click‑Fit quick release for easy entry and exit and secure foot and heel hold without restricting circulation.

• Built for extreme cold rides: The MXZ400 is Lake’s new benchmark winter boot, with double the insulation and a Winter Extreme last specifically designed for extreme cold‑weather cycling.
• Premium leather + waterproof protection: Upper combines water‑resistant full‑grain leather with abrasion‑resistant and waterproof leather and a seam‑taped membrane bootie to increase water resistance and durability.
• Layered insulation system: Thinsulate insulation, temperature‑regulating lining, waterproof membrane, and a composite 6‑layer insulation footbed create a temperature‑isolating barrier that keeps heat in and cold out.
• Sure‑footed sole with ICE LOCK: Enduro sole uses ICE LOCK anti‑slip lug inserts—vertically injected micro‑glass fibers that grip virtually all surfaces—plus a 50/50 rated sole that’s comfortable and durable on or off the bike.
• Dual BOA closure for secure fit: Easy‑replaceable, tongue‑mounted BOA dial plus side‑mounted push/pull BOA dial with dual Click‑Fit quick release give independent upper/lower adjustment and secure heel hold without cutting off circulation; includes leather over‑flap with reflective panels and gator D‑ring.