Trouser Bag.

I found Louis pushing his bike along the road from Belpech. The little clips that hold a bottle of water on the cross bar, held a plastic bottle of wine.
As I couldn't fit him and his bicycle and his bag in my car, I took his bag back to La Borde and left it outside his hut. It smelt high. It wasn't until I got back that I realised he'd made it out of an old pair of trousers.