Whatever short size you typically wear, go with that size, these are more tapered and also a little shorter vs other brands (as you can see, above the knee to show off the quads). However with the 5" inseam they ARE longer than our Classic Shorts. If you normally wear medium, wear medium. Large go with large etc. Our most highly requested type of shorts, our Bodybuilding Shorts, are finally back in stock with brand new color options. Why are they so popular? We've perfected gym shorts. These shorts have been tailored to fit above the knee and are tapered around your thighs to show off the wheels. A side slit is also included in case you are busting out with gains. The material is breathable, durable and slightly stretchy. Perfect for lifting AND attracting attention. The inseam on this one is closer to 5". These Bodybuilding Shorts are our most rugged type of Shorts, made with a thicker material, while still feeling comfortable and breathable. They are approved for your toughest workouts.