All our slippers are lined with premium earth-friendly fleece with a soft eco-lux fabric backing to ensure no blisters or rubbing occur during wear. Our elastic has been tightened to perfection and our slippers fit best without socks. Our slipper is designed to regulate heat during climate conditions (keep cold in summer and hot during winter) therefore barefoot is preferred. It has similar durability and feel to animal fur but is 100% vegan friendly.