Playground Japan - PG Cave 2 Boots - BlackPlayground is a TOKYO based sneaker store that deals in some of the hottest vintage sneakers around, however they aim to be much more and as such have their own product lines that use vintage inspiration to add new value to the market. Introducing the new CAVE. The shoe features a two layer construction, with an outer layer of rubber, leather (cowhide), and neoprene from the toe up, and a nylon inner layer. The inner layer features a quick lace system