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Men's Nucleon Flex Jacket and Pants Compatibility:

Men's Jacket Size: Alpha	Men's Jacket Size: Euro	Men's Pant Size: Alpha	Shoulder / Elbow / Knee Armor Size
XS	44	XS	SM
SM	46	SM	SM
-	48	-	SM
MD	50	MD	LG
LG	52	LG	LG
XL	54	XL	LG
2XL	56	2XL	LG
3XL+	58+	3XL+	LG

Women's Nucleon Flex Jacket and Pants Compatibility:

Women's Jacket Size: Alpha	Women's Jacket Size: Euro	Women's Pants Size: Alpha	Shoulder / Elbow / Knee Armor Size
XS	36	XS	SM
SM	38	SM	SM
MD	40	MD	SM
LG	42	LG	SM
-	44	-	SM
-	46	-	SM
-	48	-	SM
XL	50	XL	LG
2XL	52	2XL	LG
3XL+	54+	3XL+	LG

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How to Measure

C Chest
Measure around the fullest part of your chest, under the armpits, keeping the measuring tape parallel to the ground.

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Alpinestars Nucleon Flex Armor Compatibility

Men's Nucleon Flex Jacket and Pants Compatibility:

Women's Nucleon Flex Jacket and Pants Compatibility:

How to Measure