With The Sprout Shell you can forget about the frustration of other “covers” that are solely for sun or rain protection, or don’t attach to the carrier. The Sprout Shell’s elastic ensures it will fit over any infant carrier. It is compact so you can easily toss it into a diaper bag when you’re on the go and pull it out when the wind picks up, the sun starts to shine or you just want to give your infant added protection in public places. Also makes a great nursing cover and shopping cart cover too!