As your intensity increases, you can rely on the support of the external heel clip, the traction of the Vibram® outsole, and the comfort of the breathable synthetic/mesh upper. NB Minimus is a whole new approach to footwear, a place on the spectrum from barefoot running to the traditional maximum-cushioning running shoe. Inspired by Good Form Running and designed to be worn with or without socks. additionally, Good Form Running teaches methods of improvement for those seeking to conquer gait issues. No-sew overlays. Synthetic/mesh upper with TPU reinforcement. Molded external counter.