Full grain leather sidewall and suede leather outsole for durable comfort The original Acorn Slipper Sock. Leather side wall and leather bottom. You won't find any vinyl in this slipper! With Acorns exclusive memory foam insole you'll feel like you're walking on a cloud. Standard issue on US space-shuttle missions since 1982! When you want a classic slipper this is it. 85%wool 15% nylon. Imported