Acorn Men's Slouch Boot Slipper 78% Acrylic/20% Wool/2% Spandex Imported Synthetic sole Shaft measures approximately 8.5" from arch Boot opening measures approximately 9.75" around Premium comfort: Back slouch sock boot house shoe with superior comfort, microfleece lining, and rubber sole for indoor and outdoor wear. Durable skid-resistant, weatherproof rugged sole provides indoor & outdoor versatility. Stylish design - Fresh designs with contrasting, color block slipper sock Ragg wool upper keeps feet cozy, warm and comfortable. Features mid calf height Memory foam comfort: Flexible multilayer Cloud Cushion insole memory foam foot bed for support that cradles the contour of your foot for a therapeutic fit. Helps alleviate sore and tired feet and foot pain associated with Plantar Fasciitis, Flatfoot, Talipes Valgus, and Splayfoot. Versatile- Versatile style transitions from house to trail to travel and is perfect for men of all ages and lifestyles. Lightweight sole and upper makes this house shoe easy to wear and tote around. Size and care: This slipper runs small; we recommend ordering the next size up for the most comfortable and flexible fit. Available sizes Small (7.5-8.5), Medium (9-10), Large (10.5-11.5), X-Large (12-13), XX-Large (14-15). Care: Machine wash cool water; dry flat away from heat Care: Machine wash cold; air dry.