Rubber soleThe heel is about 0.7 cm.Warm fleece lining: these are slippers with a convenient slip-on design, plus a cozy faux fleece lining that wraps well around your feet and provides soothing comfort.FIRM RUBBER SOLE: The stiff sole makes these winter slippers for women perfect for indoor and outdoor home use. Its strong traction allows you to stomp silently in the bedroom. With it, every step you take will be steadier.HIGH-DENSITY MEMORY FOAM INSOL: This stylish and comfortable home slipper is lined with high-density memory foam to really relax your feet and keep their shape.Suitable for women of all ages and lifestyles. They make great gifts for girlfriends, wives, moms, daughters and your loved one who wants to refresh her daily wear.Plus: Easy care - Machine washable with a plush wool-like upper and high density cushioning, these home slippers may feel a little tight at first, after a few wears they will stretch to a custom size.