THE R.A.D® R-1 IS TUNED FOR GYM, HIIT, AND RUN TRAINING—THE WORKHORSE OF YOUR GYM SHOE ROTATION. Lightweight and breathable SwellFoam N2 midsole for comfort and performance Tuned for HIIT and Running Designed with the athlete in mind, it is a lightweight cross-training shoe built to elevate your workouts. Our SwellFoam N2™ midsole delivers responsive energy return for high-intensity movements and speed work. A generous stack height adds cushioning and comfort, whether you’re racking up reps in the gym or logging miles on the road. The R.A.D® R-1 keeps you moving, free to perform during your gym and running workouts. ———— Note that these are brand new and never worn. They were gifted to me, but not my size.