Though Bike Share programs are fairly new in the U.S., they are growing quickly. Riding a bike when you have stuff to tote to work or school can be cumbersome. The A.B. Pack is a canvas sack that holds your stuff securely, minimizing potential damage especially if you’re scooting long with a ShareRoller. It also literally takes a load off of your back — just secure A.B. Pack in the bike basket. It’s not quite clear why this particular item is any better than other totes that fit in the basket. For $39, though, backers can bag their own pack.