Snug Fit design boots: Slip-on boots that feel like they are laced on; superior ankle/heel support to reduce incidences of ankle roll-over; superior arch support to reduce fatigue, finally a gum boot that moves with you, as part of you. Shaft measures approximately 13.75" from arch, Heel measures approximately 1.25", Platform measures approximately 0.75", Boot opening measures approximately 17.25" around. CSA Omega – Electric shock resistant 18kV, CSA Z195-14 “Green Fir Tree” chainsaw protection - Chainsaw Protection (Highest Class - Class 3: 28m/sec chainsaw speed as per EN ISO 17249: 2013), CSA Z195-14 / ASTM F2413-11 Grade 1 Steel toe and plate