I wear size large in my gloves and ordered these in a large as well. They fit snug and perfectly over my winter riding gloves, if you don’t like a snug fit then order one size up. Have not worn them in rain but I immersed them in cold water and they did not leak. I think they should be fine while riding in the rain.

bought large to fit over my large leather gloves .Fits over my none insulated gloves but to tight for my insulated ones .If your to put them over insulated gloves would suggest a size bigger. Yet to .try them in the rain.

Gloves arrived in good time they fit perfectly over my riding gloves, i where a 2 xl riding glove the 2xl over glove worked good over heavily armoured knuckles, havent had a chance to use them in the rain but did run them under tap water and they stayed dry