I LOVE THESE SHOES. I have put less than a 100 miles on them before finally accepting that they are too small for me. They still have a 200-300 miles left, and the carbon plate in the sole does the job. Sad to let these go. They are in great shape, and I would use these for racing days only, so the wear is pretty light. DETAILS: It’s speed over everything when you lace up the Endorphin Pro 3. Designed with a carbon-fiber plate and an even thicker stack of PWRRUNPB foam cushioning, you get more pop underfoot for the ultimate go-fast experience. Max stack of high-performance PWRRUNPB foam cushioning S-curve carbon plate for the right amount of spring and pop FEATURES & BENEFITS SPEEDROLL Technology propels you forward effortlessly Toe the start line with a max stack of high-performance PWRRUNPB foam cushioning S-curve carbon-fiber plate gives you the perfect amount of spring and pop Stay comfortable with a lightweight breathable mesh upper