For what you'd pay in the US for similar kits, these are a phenomenal deal. Yes, they are coming from China, but the material is high quality Lycra and the chamois pad and stitching is amazing. I couldn't tell the difference in the kits I have that cost twice as much.

For the fit, I went with a size up than normal. Usually am a medium and the large fits great. I am 5'9 and 180 pounds but mostly athletic build Happy to have gotten the large and just ordered a second one.