45NRTH Wolvhammer BOA Cycling Boot - Black Size 4045NRTH Wolvhammer Cycling Boot: BOA Closure Black Size 40. Originating from the conceptual standpoint of a mountaineering boot the new and evolved Wolvhammer is lighter more comfortable and grippier. The overhauled design features a removable synthetic liner and a three piece proprietary bottom assembly compatible with flat and clipless pedals. When the cold winter creeps in Wolvhammer has you covered. Single zone BOA closure with a gusseted tongue to