Made from Lambskin with sheepskin inner. Warm, snuggly and excellent at staying on little feet. Handmade in New Zealand. 0-3 months - 10cm / 3.9" 3-6 months - 11cm / 4.3" 6-12 months - 13cm / 5.1" Note: As each baby's foot size is very variable and these sizings are a guide only. Tan pictured. *Non organic.