From pattern notes:

“Already impatient to wear your spring dresses and tanks, but faced with the reality of chilly weather? Plagued by over-zealous air-conditioning? Knit up this ballet wrap-style cardigan and stay warm while feeling springy.

Dress the simple shape up or down with your ribbon selection -- or forego the ribbon entirely and use snaps. Or get extra-fancy…sew snaps to the cardigan and to several ribbons, then change the ribbons to suit your mood.“