Sizing varies by style: men's jackets are offered in adult men's sizes, women's styles list XS–XL, and kids' jackets use big-boy/kids ranges (descriptions indicate fits for roughly ages 5–12). Always compare the listing's size chart and measurements for the best fit.
They typically use zipper closures (some feature an off-center or separating front zipper), plus a waistband belt and hook-and-loop (Velcro) fasteners at the sleeve cuffs. Some styles also include decorative zippers or buckles.
Kid jackets use big-boy/kids sizing and are described for about ages 5–12. Verify fit by comparing the listing's measurements to the child's measurements.
Product descriptions note a white T-Birds logo printed on the back of the jacket.
Listings describe T-Bird jackets as 'made to fit' across men's, women's, and kids' sizes, and recommend comparing your measurements to the size chart. Descriptions also note that real people/kids were used to determine the cuts—check each listing's sizing details before purchase.