In the casually confident chukka boot style, the new Tretorn Öbo GTX Leather is classic leisure footwear with all the modern appointments. Waterproofed leather uppers wtih gusseted construction. GORE-TEX® waterproof lining. 100% post-industrial mesh sock liner. Moisture-wicking insole in molded eco-OrthoLite® (an open-cell foam with shape-maintaining spring-back technology, made with 20% non-food source bio-oil). Rubber midsole and non-marking rubber outsole. Two sets of laces, one tonal. Available in brown or black. Bonus history trivia: Tretorn was the official shoe of tennis legend Björn Borg; both are Swedish.