This bag mounts beautifully to the RV1C, and easily keeps the beers and sandwiches cool for an entire round. There is a net compartment at the rear of the foiled lower section that secures standard cold packs, and there is plenty of room in the top for items that don't need cooling.
The bag is high enough not to get covered in grass and muck, and the only downside so far is that it can be a little fiddley to put on the cart, and it needs to be removed to fold the trolley. It also has a grab handle on the top for carrying when not connected to the trolley.
Overall a great addition to a great trolley in the RV1C