Muck Boot Chore Cool Soft Toe Warm Weather Men's Rubber Work Boot Synthetic Rubber sole Shaft measures approximately 12" from arch Heel measures approximately 1" Platform measures approximately 0.75" Boot opening measures approximately 16" around 4 mm neoprene provides comfort and flexibility, along with excellent waterproofing, shock absorption and heat retention properties; adjusts to your foot shape to resist blisters and chafing Anti-microbial XpressCool fabric lining pulls moisture away from skin to keep feet cool and dry in warm weather; comfort rated from 40 F to 95 F (4 C to 35 C) 100% waterproof work boots; Spandura treatment offers maximum abrasion resistance; etc Sockliner reduces friction and heat build up Steel shank for support; Vibram rubber outsole for traction on varied terrain; 12-inch height offers good protection Triple toe and quadruple rubber heel reinforcement for extra protection and durability