If keeping it cool, caL M and subtle is your style the Shades of Grey Collection is more than perfect for you! The combination of neutral and pattern knits make it easy to wear. The Men's Henry Slipper has a 100% acrylic and 100% cotton corduroy upper to give the 100% polyester furpa lining an extra boost of warmth. These come in S (8-9), M (10-11), and L (12-13). Hand wash in cold water with mild soap and air dry. Made in China. Material: Acrylic, polyester, cotton corduroy.