Self-Contained. Here's an alternative to Baggu Shopping and Grocery Bags that includes an attached storage pouch — Flip & Tumble. Jean even compares them to Popples! Via: NotCot.com...The ripstop nylon bag measures 12"x14"5" and the strap is 26.5" and features a shoulder pad for comfort. When "balled up" the bag is 3" in diameter. Capable of carrying 20 lbs., each bag costs $15. Available in four colors directly from Flip & Tumble.