Tundra Boots Kids Womens Hearty (Toddler/Little Kid/Big Kid) Nylon^Synthetic She'll feel lots of love for the Hearty boots from Tundra&reg; Boots Kids! Nylon and synthetic upper. Heart detailing on shaft. Zip-up front for easy on and off. Faux-fur lining and cuff provide fantastic in-boot feel. Synthetic outsole provides excellent traction. Imported. Measurements: Weight: 11 oz Circumference: 12 in Shaft: 8 in Product measurements were taken using size 2 Little Kid, width M. Please note that measurements may vary by size.