Arnold Palmer Jr Boy's Windbreaker-10/12?

Yellow golf windbreaker for your young golf caddy by Arnold Palmer Jr line. Not entirely sure of the size as the inside tag is illegible. Measurements are 14" from armpit to armpit, 16 1/2" long with 17 1/2" sleeves, so I estimate to be a boy's medium 8-10. It's got lots of neat details, as pictured. It's nylon, fully lined, and in good pre-owned condition.