•Ultra lightweight construction. •J&M Smart Degree Technology® for temp control. •Smart Degree linings are treated with anti-microbial protection for long-lasting wear. •Breathable uppers and ventilated outsole maximize benefits of Smart Degree Technology®. •Ventilated, removable EVA footbed with memory foam. •Lightweight, injected EVA outsole with rubber heel for traction and durability. •Leather Working Group Gold Rated tannery.