It is difficult to predict the size (thank God for Amazon's return policies) but once you figure it out, the fit and feel are excellent. No bunching, binding or chaffing, stay in place and flex with your body. I haven't crashed but I can tell these work. I hit my knee hard with a hefty stick and didn't even feel it. Sure they're expensive but what is your irreplaceable body worth to you? If you got into an accident, these would be worth every penny. Highly recommend.
Son muy cómodas y te da la sensación de ir más seguro, hasta el momento por suerte no las tuve que probar en caídas y espero que siga así, pero muy recomendable además puedes llevarlas mucho tiempo y no molestan