Bring out your outdoorsy personality with the Muk Luks black or grey Gavin men's slipper. Patterns of rich warm color tones are shown throughout this slipper. Muk Luks Gavin Slipper has a 100% Acrylic upper and will keep your feet warm and comfortable with the 100% Polyester Furpa lining and insole. These slippers come in S (8-9), M (10-11) and L (12-13). Hand wash in cold water with mild soap and air dry. Imported. Material: Acrylic Knit, Polyester Faux Fur, Polyester.