The concept of the minimalist Rens Waterproof Coffee Sneaker is to recycle existing waste and to avoid creating any more waste. As a result, the materials used to make the sneakers, which are as stylish as they are multifunctional, are made from old coffee grounds and recycled plastic. The resulting threads are odourless and antibacterial, and dry quickly while blocking UV rays. An additional membrane ensures that the sporty shoes are breathable and absolutely waterproof.