Alpinestars Hurricane Rain Trousers - Fluo Yellow / Black

Ordered large and were the correct length but the crotch is very low. When sitting on the bike, the legs rise to above the tops of mid-length boots and the elasticated ankle keeps them there. Water funnelling into boots is not great.

Light, waterproof, small space, excellent

Really pleased with these. Close fitting so they don't flap about, but still cut large enough to fit over riding jeans.
They're also lined wth a light mesh, so slide on and off easy and come complete with a small, cigar-shaped bag to stash them in.
I ride a scooter, so they haven't been in direct or heavy rain, but they've been watertight for me.