Lisa truly is the ultimate boot for those in need of a pair of lightweight boots to use in both hot and cold conditions. The boots have detachable linings that can easily be taken out and replaced with the accompanying soles to produce a boot that's comfortable to wear even in hot environments. The warm lining is made of polyester and can be easily removed to wash and dry. The boots are, of course, also completely waterproof up to the edge and easy to clean. They're so lightweight that you can barely feel them on your feet; a bit like going out in just a pair of waterproof socks!