100% leather with suede soles in 0-6 and 6-12 months and with rubber soles in 12-18 and 18-24 months. Velcro fastening for easy on/off and easy fasten strap to keep the shoe on the foot. Inside of shoe is in soft plush fur for extraordinary comfort and warmth. Come in a Donsje gift bag tied with a ribbon and with a little jingly bell. These booties would make the most amazing gift!