I love Born Primitive! I was worried about the sizing on these Rise & Grind Booty Shorts, as I'm between a Medium & Large in BP & other brands. I ordered a Medium, as suggested by the size chart, and I'm so glad these worked out for me! I've used these shorts for several Crossfit WOD's and it's amazing! Fits great, perfect rise on the waistband, and comfy! For reference, I'm 5'4", 130lbs, 30" waist, 39" hips, athletic build.