HAFLINGER. 792003-3. BIO KURT VELCRO FELT MULE. BLACK. Chic clog for him and her by HAFLINGER. Upper material-- The upper material consists of unmixed felt made of pure new wool. This material keeps the feet warm and at the same time provides an air conditioning balance. The velcro strap is made of leather. Sole and footbed-- The leather inner sole ensures an increased wearing comfort. The foot rests on an anatomically shaped footbed which from the outside is covered by a slip resistant rubber sole. This clog will survive a short trip outside occasionally.