Bogs Classic Dinosaur (Toddler/Little Kid) Synthetic Rubber sole Shaft measures approximately 8" from arch Heel measures approximately 0.75" Boot opening measures approximately 10" around 100% waterproofDuraFresh biotechnology activates to fight unwanted odors Durable hand-lasted rubber over a four-way stretch inner bootieEasy pull-on handles Constructed with 7mm waterproof Bog Neo-Tech insulationComfort rated from temperate to -30 degrees F Bogs Max-Wick moisture-wicking lining to stay dry and comfortableHeight: 10 inches Non-marking and self-cleaning outsole100% satisfaction guaranteed