Find out what your feet are capable of. The Primus Lite Knit takes our hero lightweight running shoe and gives it extra groundfeel and flexibility. Primus Outsole: Get as close to the ground as possible. Performance Insole: The Performance Insole is made of 98% recycled polyurethane foam, which helps reduce waste and the use of virgin plastics. Tough Rubber Compound: Strong, non-marking rubber compound for sticky grip and high-abrasion when you need it most. Urban: Stripped-back soles for barefoot living - so you're never too far from nature, even in the city. The Primus Lite Knit is for untapped athletes who want to feel their raw potential. An evolution of the original Primus trainer, with an ultra-thin sole and a knitted upper that moulds to your foot, giving you the ultimate flexibility. Guaranteeing foot strength and mobility for running and natural flow workouts.