I've had one pair of gloves for ten years or more. They are notionally waterproof winter gloves though you could be easily fooled now on both counts.

A bit of research suggested that some more lightweight gloves with suitable venting would be in order. It's not been clear exactly what sort of gloves MXers use but I settled on some AlpineStars Octane S-Moto gloves. (Octane sounds good, doesn't it?)

Plenty of venting, made of leather for abrasion resistance (which is futile but the longer you can stave off your skin abrading the better) and some plastic on the knuckles.

They seem pretty good. My only complaint about the gloves is that the rubbery-plastic branding on the pinky digs into my finger. It's serious!

My other complaint was that no-one seems to be able to get glove sizes accurate. I couldn't find a shop with any in so made a best guess with some other AlpineStars gloves and sent off to the Rocket Centre to find the gloves were a size too small. I was going to send them back then read the small print which to all intents and purposes meant I'd be losing 20% of the value of the gloves. So I ordered a second pair a size bigger.

My other other complaint is that most of the time my jacket rides up beyond the cuff of these gloves benefitting in a small triangle of sunburn on my wrist.