I use leather mostly. I bought a synthetic glove that’s supposedly water resistant and windproof. Feels different but when it gets cooler I’ll be spending more time with it to get the feel and get it broke in. Right now I think my third finger is dragging a tad with it. The windproof feature may be worth a million bucks this fall. Other than that I think it’s a matter of choice. Synthetic may be better in damp conditions??????