From The North Face, the Women's ThermoBall Progressive Zip II Logo Cold Weather Waterproof Booties feature: Water-repellent, recycled P.E.T. ripstop upper Waterproof DryVent™ membrane Non-PFC durable water-repellent (non-PFC DWR) finish Translucent mono-mesh overlay on vamp for a see-through effect to the quilting below ThermoBall™ Eco recycled polyester insulation helps keep feet warm even when wet PU-coated zipper closure  TNF™-branded webbing pull loop at heel for easy pull-on Comfortable OrthoLite® Eco LT™ footbed made with 5% recycled rubber content and 8% plant-derived bio-oil instead of petroleum  Rubber outsole for increased traction Approx. 4" boot shaft height Approx. 12.5" boot shaft circumference Imported.