Men's Amherst 2.0 Knit Plain Toe - Gray Heathered A beloved member of our bestselling Amherst family. Lightweight and flexible design in breathable sport knit, with an updated 2.0 shape and a slightly thicker chevron-patterned sole. DETAILS: Temperature-regulating J&M Smart Degree Technology® polymers line the interior and activate at both hot and cold temperatures, so your feet feel just right all day long. Linings are treated with antimicrobial protection for enduring wear.      Removable, contoured EVA and memory-foam cushioned footbed. Full-grain leather trim. Extra-flexible grooved TRUFOAM® sole for cushioned comfort.  Rubber heel insert.