Icebug Women's Ivalo BUGrip Studded Traction Winter Boot 100% Textile/Leather Rubber sole Shaft measures approximately 7.75" from arch Heel measures approximately 1.25" Platform measures approximately 0.5 inches Boot opening measures approximately 10.5" around Icebug Women's Ivalo BUGrip Studded Traction Winter Boot Rubber BUGrip outsole with 16 carbide tip studs for traction on slippery surfaces Warm fleece lined upper with water resistant ripstop nylon Weather resistant front zipper with grippy silicone tab Abrasion resistant baseline trim for durability Comfortable walking midsole with stabilizer -4F/-20C Comfort Zone