Size Guides & Charts from Day Motor Sports

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SIMPSON NECK BRACE
• Reduces neck fatigue • For all types of racing • Removable knit Nomex® sleeve • One size with a...

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Size Guides & Charts

DRIVERS SUIT SIZING CHART
MEASUREMENT	Child	Child	Child	SML	MED	LRG	XLG	XXL	XXX
	SML	MED	LRG
Chest	27-29"	30-32"	33-34"	36-38"	38-41"	42-46"	46-49"	50-54"	54-59"
(See Note 1)
Stomach	23-26"	27-29"	29.5-31"	32.5-35"	35-38"	40-43"	43-46"	47-51"	51-54"
(See Note 2)
Waist	21-24"	24-26"	26-28"	29-32"	32-35"	38-40"	41-43"	44-48"	48-52"
(See Note 3)
Hip	26-28"	30-32"	33.5-34.5"	35-37"	38-40"	42-44.5"	45-48"	50-52.5"	53-55"
Inseam	18-19"	21.5-22.5"	24"	29-30"	30-31"	32-33"	32.5-33.5"	32.5-33.5"	34"
Sleeve	20-21"	23-25"	26.5-27.5"	28-29"	30-32"	33-34"	34-35"	35-37"	37-38"
Neck	10.5-11.5"	11.5-12.5"	12-13"	13-14"	13.5-15"	15-16.5"	16-17.5"	17.5-19"	19-21.5"
Waist to Ankle	24-25"	28.5-29.5"	32-33"	37-38"	38-39"	40.5-41.5"	41-42"	41.5-42.5"	45.5"
Note 1 - Measure at the largest circumference.
Note 2 - Measure at the normal beltline.
Note 3 - Measure from the back of the neck at the center to your wrist; arm bent downwards at a 90° angle at the elbow.

HELMET SIZE CONVERSION CHART
Measurement	Size	Metric
20-1/2	6-1/2
	(XXSmall)	52
20-7/8 to 21-1/4	6-5/8 to 6-3/4
	(XSmall)	53-54
21-5/8 to 22	6-7/8 to 7
	(Small)	55-56
22-3/8 to 22-3/4	7-1/8 to 7-1/4
	(Medium)	57-58
23-1/8 to 23-1/2	7-3/8 to 7-1/2
	(Large)	59-60
23-7/8 to 24-1/4	7-5/8 to 7-3/4
	(XLarge)	61-62
24-3/4 to 25-1/8	7-7/8 to 8
	(XXLarge)	63-64
25-1/2 to 26-1/4	8-1/8 to 8-3/8
	(XXXLarge)	65-67
For a perfect fit:
Use the sizing chart to get the correct size for your helmet. Carefully measure around your head, above the ears and about an inch above your eyebrows.
NOTE: Although many people's heads may measure identically, they may be shaped differently which affects size and fit. Once you have selected the proper size, and you have recieved your helmet, it should have a snug, but comfortable fit for optimum performance.

RACING SHOE SIZE CONVERSION CHART

Mens				5.5	6	6.5	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	13	14
Womens	4.5	5.5	6.5	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	12.5	13	13.5	14.5	15.5
Child	3	4	5	5.5	6

GLOVE SIZE
INFORMATION
Measurement	Size
6.5	XXSmall
7.5	XSmall
7, 8.5	Small
8, 9.5	Medium
9, 10.5	Large
10, 11.5	XLarge
To find glove size in inches,
measure around the largest part of
the hand over the knuckles while
making a fist, excluding the thumb.

HOW TO DETERMINE SEAT SIZE

A = Width of Hips

The width of the hips determines the size of the seat. To measure hips have the driver sit on a bench with his legs hanging over the side. Measure width of hips across centerline of body side to side, but don't let the tape measure follow the curvature of the body. A yard stick usually works best.

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