**From catwalk to crosswalk, you'll spot these looks everywhere this season.** The Tammy Slingback Flats by Reformation feature a thin slingback strap and a square toe accented by double bows. **From catwalk to crosswalk, you'll spot these looks everywhere this season.** The Tammy Slingback Flats by Reformation feature a thin slingback strap and a square toe accented by double bows. Founded in 2009, Reformation is a revolutionary lifestyle brand combining stylish, vintage-inspired designs with sustainable practices. With each limited-edition collection, the LA-based brand empowers individuals who want to look beautiful and live sustainably.