Sprint Trekker GTX Shoes - waterproof winter shoe from Timberland. The Sprint Trekker GTX Shoe from Timberland has a Gore-Tex membrane for breathable, waterproof protection. The Sprint Trekker is made of high-quality Better Leather from sustainable tanneries with a silver rating for their environmental processes. This comfortable Chukka features a lightweight, breathable Ortholite footbed and a cushioning EVA midsole.