Jambu Women's Heidi Boot Grey The Heidi sneaker boot features a classic vulcanized look but adds a hint of sophistication to the mix with smooth lines, faux fur trim, and a decorative button on the ankle. Memory foam insoles cushion your foot, and an APMA seal of accepGreyce guarantees that this style keeps your feet as healthy as they will be comfortable.� Jambu Women's Heidi Boot Grey