[Shop] Meet the down jacket for your feet. SUBU Slippers comfort your barking dogs after a long day with a soft, spongy footbed and an insulated exterior. They also boast a rugged outsole, meaning wearing them outdoors is not out of the question. Perfect for the colder months, SUBU Slippers are like cladding your feet in sleeping bags that rest atop foam mattresses. In other words, once you put these on, you may never take them off.