If you haven’t considered insoles an essential part of your outdoor kit, it’s time to revisit your strategy. A high-quality insole isn’t a piece of gear that you’ll notice. You will notice how your feet, legs, and even back feel throughout your journey. Tread & Butter insoles are built from the ground up with sustainable natural cork. These insoles sport an exquisite ergonomic fit, plush cushioning, and odor-crushing silver ion technology.