This rash guard features a wide neck and is perfectly stretchy for the best fit. It comes in a spf 50+ fabric but is chemical free. We love it with the matching shorts. Chemical FREE Oeko-Tex Certified Fabrics with UPF 50+ Custom Designed Prints in Vancouver, BC Ultra soft + comfortable fabrics designed for prolonged wear Breathable Lycra Fabric Blend Featuring 4-Way Stretch Chlorine and Fade Resistant Fabric Easy on + off neck opening Family matching options