OUR SUNSUITS ARE MADE FROM A HIGH QUALITY 95% COTTON AND 5% SPANDEX BLEND MAKING THEM SOFT, STRETCHY AND SUPER COMFY FOR YOUR LITTLE ONE. SNAPS IN THE CROTCH MAKE FOR EASY DIAPER CHANGES. THE BACK OF THE SUNSUIT HAS A CRISS CROSS STRAP DESIGN WITH MULTIPLE BUTTON HOLES FOR EASY ADJUSTMENTS