Waterproof
The poncho is made from a waterproof material, with waterproof seams.
Child seat and helmet compatibility
This poncho fits the vast majority of baby seats on the market and at Decathlon (Polisport, Hamax, Bobike, Thule, Quibbel, etc).
Its built-in hood is large enough to cover the head of a child wearing a helmet.It can be slipped over the child's head once they're settled in their seat.
Storage
When not in use, it can be easily stowed away in its front pocket, which is the size of a small toilet bag.
Version 2 improvements
Version 2 of this poncho has improved the strength of the seams in the belly pocket, where the poncho can be folded when not in use.
Tips for storage and maintenance
Storage tips
If the poncho has been used in the rain, it's best to leave it unfolded to dry once you arrive at your destination.