Trident Size Chart.

Size	Height	Chest
XX-Large	74-76ins / 6'2" - 6'4"	44-47 ins
X-Large	72-74ins / 6' - 6'2"	41-44 ins
Large	70 -72ins / 5'10" - 6'	38-41 ins
Medium Broad	68 - 70ins / 5'8" - 5'10"	42-44 ins
Medium	68 - 70ins / 5'8" - 5'10"	36-39 ins
Small Broad	65-67ins / 5'5" - 5'7"	40-42 ins
Small	65-67ins / 5'5" - 5'7"	36 ins
Youth	62-64ins / 5'2" - 5'4"	34 ins
XL-Child (11-12 yrs)	146-156cm / 4'9" - 5'2"	32 ins
L-Child (9-10 yrs)	136-145cm / 4'5" - 4'9"	30 ins
M-Child (7-8 yrs)	125-135cm / 4'1" - 4'5"	28 ins