I tried the L size but they were quite hard to get on but I do have an over size thumb joint on my right hand. so the shop ordered in the XL now these were better but I still hade to open them up fully to get on, once on and fastened up they felt perfect, I took them home and put them on and off a few times all I needed to do was fully open the wrist strap to get my bigger thumb joint in, so hey I now own them. I have a KTM 390 SMCR and went for a ride to try them out, I was very pleased that I managed to use all the controls straight away and soon forgot they were new. the air flow was good and a little better when I spread my fingers a bit, the thing was it was over 30 degrees and air flow was very warm and not a lot of high speed riding to get cooler air but one thing for sure after a 46 mile ride my hands were completely dry as in not sweaty! These are now my summer Gloves.