Mountain Hardwear Black Down Puffy Jacket Older but GUC size XS?

Mountain Hardwear Black Down Puffy Jacket Older but GUC elastic at waistband does not have much stretch to it anymore. Logo at neck is wearing off. Front and sleeve logo intact. No holes/rips/stains. size XS? It is very similar size to my Patagonia down sweater which is XS. Chest 18.5” Length 23”