This is a great hat! I wish my toddler kept hats on and would wear this. Bought new and he wore it 2 times. Size small is head circumference 18.5 in min to 19.75 max. The color is correct on the pic with the tag, it’s a green teal outside and blue inside the rim. From the website: With an overall rating of five stars and over 4,000 reviews, this lightweight and breathable hat includes UPF 50+ protection, repels water and stains, and comes in multiple color options for every kid to enjoy.