arctiv8 Toddler/Little Kid/Big Kid Nordic Knee High Winter Snow Boots man made material FITTING TIPS: Full Size Only, Order Half Size Up For Loose Fit! Cold-weather boot featuring 200g Thermolite insulation rated to -25F, and zipper closure for easy on/off. Water resistant upper, 200g Thermolite insulation rated to -25F All-weather protection and a toasty layer of insulation. Shaft Height With Heel: 9" (approx) man made material FITTING TIPS: Full Size Only, Order Half Size Up For Loose Fit! Cold-weather boot featuring 200g Thermolite insulation rated to -25F, and zipper closure for easy on/off. Water resistant upper, 200g Thermolite insulation rated to -25F All-weather protection and a toasty layer of insulation. Shaft Height With Heel: 9&#034; (approx)