Thin waterproof coat that will withstand being scrunched up an a backpack but will also cover me down to my knees

[fairyfluf]

As title! Needs to be FULLY waterproof and have a decent hood.

Rains, the longer length?

Decathlon every time

Mountain warehouse

Thank you. I had one from monsoon which given the name you'd think would do the job but I have found out not!