Black Rainbow Cork Cork on Cotton. All our booties are made from Portuguese imported cork, are vegetable dyed, lined with premium earth-friendly Cotton Teddy fur (Made in Italy) with a soft eco-lux fabric backing to ensure no blisters or rubbing occur during wear. Our elastic has been tightened to perfected and our booties fit best without socks, our boots are designed to regulate heat during climate conditions (keep cold in summer and hot during winter) therefore barefoot is preferred. We use real “touch pro shoe grade” quality cork fabric that is fused to a soft fabric backing. It’s also been treated with UV and abrasion protectants as well as scotch guard. This means it can be wiped clean with a baby wipe or soft cloth and water! It has similar durability and feel to animal leather but is vegan friendly, our brand is also PETA-certified Vegan. As a bonus, cork has natural anti-mildew/anti-bacterial qualities. pink fur can differ based on availability.