Patagonia Little Kids Torrentshell 3L Jacket - New Navy
Size Charts by Patagonia
Kids' Patagonia Clothing Size Chart 2021 | evo
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Patagonia sizing guide: Find your perfect fit for the great outdoors | OPUMO Magazine
Patagonia's Japan Website (Patagonia.JP) provides Garment Measurements that are Omitted on the USA Website. They aren't exact measurements (there's a disclaimer) but the measurements are close and can be helpful for sizing. :