I've got one of these lightweight, paperlike, waterproof coveralls in size 48/XS and giving it out cheap!
 
Manufacturers product description is as follows:
 
Closed with a zip covered by a press stud storm flap; a hood and stand-up collar. Elastic around the entire waist. Leg and sleeve width adjustment with press studs. Made of AquaProof Vision – a lightweight, waterproof and flexible fabric. Fitted with reflective tape to increase worker visibility. Designed for use in adverse weather conditions with limited visibility. Provides a high level of protection from wind and rain. Tape welding on both sides improves the durability of seams.
 
The product complies with applicable EU standards: EN ISO 13688, EN 343 and EN ISO 20471.
 
Link to manufacturers product page with more photos.