Woodbeater offers comfort as a running shoe with 4×4 grip and added width for stability.  Extra roomy fit for feet with a high instep 2mm G1-air spacer prevents condensation and circulates air around the boot Extra reinforced foot by Japan-rubber Extra deep outsole tread Lynx ICE-GRIP+ secures optimal grip in min. -45C / +30C High abrasion resistant Spandex upper cover G1-stage3 footbed Technical FeaturesComfort rating: -40C Size and FitCalf fit: Large Materials Lining: Coil lining + 5mm neoprene + 2mm G1-air spacer Upper: G1 70 vulcanised natural rubber Shank: TPU Outsole: All-terrain gripper 2.0