From George & Ginger:
The Sum It Up Bra Back Edition is an all-in-one design that's perfect for mixing and matching your favorite styles! One basic, front with TEN different back options--all interchangeable and ready to be customized just for you!
Recommended Fabrics: Suggested fabric for this pattern is a 4-way knit with at least 50% stretch and good recovery, such as cotton lycra or athletic knit.