Model: 211-30-440 BEDROOM ATHLETICS Harris Tweed Upper Size range from S to L Grade A Australian Sheepskin Lining Slip On BEDROOM ATHLETICS Men's William Harris Tweed Mule Slippers. Beautifully crafted tartan winter slippers featuring stylish Harris Tweed uppers, cosy grade-A Australian sheepskin lining, and slip-on foot entry. Slipper sits on non-slip branded TPR sole that is textile covered for comfort and durability. Treat yourself with these traditional everyday sleepers, which keep feet warm when the temperatures drop.