Adventure begins with the Harbor Stripe Collection by Serendipity! The Harbor Stripe Shift in soft, cotton knit is an easy-to-wear style for girls. Features navy and white stripes and custom buttons on strap at back. Cotton/Elastane blend. See Size Guide. xxs(12m-18m),xs(2t-3t),s(4t-5t),m(5-6),l(7-8),xl(9-10),xxl(11-12).