Bogs B-moc Waterproof Insulated Kids/Toddler Winter Boot 100% Textile Imported Rubber sole Shaft measures approximately 6" from arch Boot opening measures approximately 9" around Comfort rated to -4 degree Fahrenheit Rebound technology in outsole for lasting comfort Bogs max wick to keep feet dry Landed with durafresh bio-technology that activates to fight odors 100 percentage waterproof and machine washable