From the Knit Picks Website:

“This young boy set contains hat, vest (pullover sleeveless), double-wrap neck scarf, and wrist warmers. Ribbing and stockinette stitches are a fine way to finish this project.”

Set Needles:
Size 10 (6mm): straight needles & DPNs
Size 9 (5.5 mm): 16” circular
Size 11 (8mm): 24” circular

Materials are sufficient to make all items in the set:
Hat
Vest
Scarf
Wrist Warmers