You will need a stitch holder and 6 buttons. Sirdar used their buttons # B5611-0485.

Finished measurements:
Chest circumference: 19.25(21.25, 23.25, 25.25)“ 49(54, 59, 64) cm
Finished length: 10.25 (11.25, 13.5, 15.75)” 25(30, 34, 40) cm
Sleeve length: 6(6.5, 8, 9.5)“ 15(17, 20, 24) cm

Yarn used:
Sirdar Snuggly Cashmere Merino Silk DK
Shade 304 Prince Charming - 4(5, 6, 7) balls

This pattern is available only through the printed or eBook Sirdar 563 Snuggly Favorites

A softly shaped cardigan shape with softly rounded collars and fastened with three buttons is an extra layer to keep your baby comfortable on all their adventures.