Girls' Y-Not Elastic Slingback T-Strap Sandals. Give her independent summer style with the Y-Not Crissy 5-10! These fun slingback sandals have an elastic band that allows her to easily slip them on by herself to get ready and save you time. The medallion and perforated design work with dressy or casual outfits, too. You'll love the versatility and freedom the Infant Crissy by Y-Not brings to her wardrobe.