I bought a really cheap Spidi waterproof over jacket, just a really lightweight plastic thing, £20/$30US. It's meant to be worn over leathers, or whatever you usually wear when riding.
And I bought some even cheaper water proof over trousers, £10/$15US. Again these are designed to be worn over regular leathers, boots etc.
The jacket claims to be 100% waterproof, and it is. The trousers are too.
The jacket has an inner zip, and a wide velcro flap, it's long enough to cover at least 10 inches/25cm of the trousers. The cuffs are elasticated and velcro too. They fit snugly over gloves and water doesn't run up the sleeve.
Also, the jacket has a draw string around the base to stop it flapping in the wind. There is a large, soft collar with a velcro flap to keep the rain from running down the back of my neck.
And they both fold up to be very small, about the size of a sandwich. Easily fits under the seat of my 954 blade.
Very cheap, works well and I'm happy with them as I can wear my proper leathers under the waterproof over suit.
