You can trust Motrax to come up with another ingenious product, and an ingenious name to go with it.
The Jonny Jacket was designed with summer riders in mind, and is especially suited to those doing track days. They are made from a tough material, and thanks to the skin tight fit the jacket does not blow and flap about like your bog standard waterproofs.
Do not be mislead though, the Jonny jacket is not guaranteed to keep you 100% dry in the zip area (and there are no legs!), but it will keep your leathers from getting soggy and heavy, and it is certainly a sound investment – especially if you ride in perforated leathers.