Pattern is written in UK crochet terms. If you usually use US terms, please take the time to understand the differences.

You will need an open-ended zipper approximately 12(14, 14, 16, 16)“ 30(35 ,35, 40, 40) cm to fit.

Finished measurements:
Chest circumference: 26(26.75, 228, 28.75, 30.25)“ 66(68, 71, 73, 77) cm
Finished length: 15.25(16.5, 17.25, 18, 19)” 40(42, 44, 46, 48) cm
Sleeve length: 11(11.75, 12.5, 13.5, 14)“ 28(30, 32, 34, 36) cm

Yarn used:
Sirdar Snuggly 100% Cotton DK
A. 758 Navy - 4(4, 5, 5, 6) balls
B. 751 Sky Blue - 3(3, 4, 4, 4) balls
C. 765 Ice Blue - 3 balls for all sizes