The bag is a whole be described as good. Warm, wind resistant and stable. Unfortunately, you can not connect directly to the Hauck Shopper sack. It is "only" tied. So everything slips when child in and out get back and forth. But it is, once you get the hang of. The fine workmanship makes this small shortcoming away. He may fit better with other models and yes I know of no other bag for comparison as an aftermarket item.
