Worked seamlessly from the top down, this is an excellent project in a toddler size for your first sweater, then make a second one for yourself!

Finished Chest Size from Toddler through Adult
61 (66, 71, 76, 81.5, 86.5, 91.5, 96.5, 101.5, 106.5, 112, 117, 122, 127, 132, 137, 142, 147.5) cm

24 (26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58) inches

Materials
Aran weight yarn, OR two finer yarns held double to get 18 stitches over 4”/10cm

361 (477, 591, 709, 810, 930, 1053, 1128, 1213, 1285, 1368, 1487, 1595, 1683, 1804, 1930, 2053, 2177) meters

394 (521, 646, 775, 885, 1017, 1151, 1234, 1327, 1405, 1496, 1626, 1744, 1840, 1973, 2110, 2245, 2380) yards

Huge thanks to Three Bags Full in Vancouver, BC, Canada for supporting the development of this pattern, and to my test knitters for their feedback on early drafts!