Thor Sizing Info
How to Measure
Size charts are for reference only. For best results, always try on product when possible.
Chest: Measure around fullest part of chest under arms for total chest circumference.
Waist: Place tape measure around stomach just above hip (pants: about 2” below top of hip bone).
Hip: Measure around hip about 6–8 in / 18 cm below waistline (or about 8 in / 20 cm below top of hip bone) with feet together.
Head: Wrap a flexible tape measure around your head ~1 inch above eyebrows and ears.
Hand (Gloves): A = width across palm at widest point (below knuckles). B = length from tip of middle finger to bottom of palm.
Knee (Guards): Adult: measure calf/thigh ~8” (20 cm) above/below knee center. Youth: ~6” (15 cm) above/below.
Men’s Jersey Sizing
Measure around the fullest part of your chest under the arms for your total chest circumference. If you're on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. Our size charts serve only as a guide for fitment. For best results, try on products when possible.
| Size |
Chest (in) |
Chest (cm) |
| S |
32–34 |
81–86.5 |
| M |
35–37 |
90–94 |
| L |
38–40 |
96.5–101.5 |
| XL |
41–43 |
104–109 |
| 2XL |
44–46 |
112–117 |
| 3XL |
47–50 |
119–127 |
| 4XL |
51–53 |
128–136 |
Men’s Pant Sizing
Waist: Place tape measure around stomach 2" below top of hip bone and measure the total circumference. Hip: Measure around hip approximately 8 in./20 cm below top of hip bone, place feet together. Our size charts serve only as a guide for fitment. For best results, try on products when possible.
| Size |
Waist (in) |
Waist (cm) |
Hip (in) |
Hip (cm) |
| 28 |
30 |
76.2 |
34–35 |
86–89 |
| 29 |
31 |
78.74 |
35–36 |
89–91.5 |
| 30 |
32 |
81.28 |
36–37 |
91.5–94 |
| 31 |
33 |
83.82 |
37–38 |
94–96.5 |
| 32 |
34 |
86.36 |
38–39 |
96.5–99 |
| 33 |
35 |
88.9 |
39–40 |
99–101.5 |
| 34 |
36 |
91.44 |
40–41 |
101.5–104 |
| 36 |
38 |
96.52 |
42–43 |
106.5–109 |
| 38 |
40 |
101.6 |
44–45 |
111.5–114 |
| 40 |
42 |
106.68 |
46–47 |
117–119.5 |
| 42 |
44 |
111.76 |
48–49 |
122–124 |
| 44 |
46 |
116.84 |
50–51 |
127–130 |
| 46 |
48 |
121 |
52–53 |
132–134 |
| 48 |
50 |
127 |
54–55 |
137–140 |
Women’s Jersey Sizing
Measure around fullest part of chest under arms for total chest circumference.
| Size |
Chest (in) |
Chest (cm) |
| XS |
32–33 |
81–84 |
| S |
34–35 |
86–89 |
| M |
36–37 |
91–94 |
| L |
38–40 |
97–102 |
| XL |
41–43 |
104–109 |
Women’s Pant Sizing
Waist: Place tape measure around stomach just above hip. Hip: Measure around hip about 6-8 in./18 cm. below waistline, place feet together.
| Size |
Waist (in) |
Hip (in) |
Hip (cm) |
| 1/2 |
24–25 |
34.5–35.5 |
88-90 |
| 3/4 |
25–26 |
35.5–36.5 |
90–93 |
| 5/6 |
26–27 |
36.5–37.5 |
93–95 |
| 7/8 |
27–28 |
37.5–38.5 |
95–98 |
| 9/10 |
28–29.5 |
38.5–40 |
98–102 |
| 11/12 |
29.5–31 |
40–41.5 |
102–105 |
| 13/14 |
31–32.5 |
41.5–43 |
105–109 |
Youth Jersey Sizing
Measure around fullest part of chest under arms for total chest circumference.
| Size |
Chest (in) |
Chest (cm) |
| 2XS |
20–21 |
51–53 |
| XS |
22–23 |
56–58 |
| S |
24–25 |
61–64 |
| M |
26–27 |
66–69 |
| L |
28–29 |
71–73 |
| XL |
30–31 |
76–79 |
Youth Pant Sizing
Place tape measure around stomach just above hip.
| Size |
Waist (in) |
Waist (cm) |
| 18 |
18–19 |
46–48 |
| 20 |
20–21 |
51–53 |
| 22 |
22–23 |
56–58 |
| 24 |
24–25 |
61–64 |
| 26 |
26–27 |
66–69 |
| 28 |
28–29 |
71–74 |
Helmet Fitment
CHOOSING THE CORRECT HELMET SIZE: Helmet fit is critical to helmet protective performance. The correct helmet size can only be checked and confirmed by physically fitting the helmet to the user. Always try the helmet on in a store, before purchasing it, to be sure you are purchasing the correct sized helmet for you. HEAD MEASUREMENT INSTRUCTIONS: Wrap a flexible tape measure around your head approximately one inch above the eyebrows and ears. Use this measurement (in either inches or centimeters) to find your helmet size. HELMET SIZING INFORMATION: To achieve proper helmet fitment, begin by finding your head circumference size using the method described. Remember that the helmet size you choose should fit around the crown of your head comfortably with no pressure points. The cheekpads should fit firmly around your face. Once your chin strap is fastened, grab the chin bar of the helmet and move it side to side. Your cheeks should move with the helmet, which should not slide across your face. Different thickness cheekpads can be purchased to obtain the best fit. Ask your dealer or visit www.thormx.com for more information.
Adult Helmet Sizing
| Size |
Head (in) |
Head (cm) |
| XS |
20 7/8–21 1/4 |
53–54 |
| S |
21 3/8–22 |
55–56 |
| M |
22 1/8–22 7/8 |
57–58 |
| L |
23 1/2–23 7/8 |
59–60 |
| XL |
24–24 1/2 |
61–62 |
| 2XL |
24 5/8–25 1/2 |
63–64 |
| 3XL |
25 5/8–26 |
65–66 |
| 4XL |
26 3/8–26 3/4 |
67–68 |
Warning: Improperly fitting products could contribute to serious injury or death.
Youth Helmet Sizing
| Size |
Head (in) |
Head (cm) |
| S |
18.5–18.88 |
47–48 |
| M |
19.25–19.75 |
49–50 |
| L |
20–20.5 |
51–52 |
Men’s Glove Sizing
Width: Measure around your hand at the widest point (generally just below the knuckle).
Length: Measure from the tip of your middle finger to the bottom of your palm.
Allow -/+ 3mm sewing allowance.
| Size |
Width (in) |
Width (cm) |
Length (in) |
Length (cm) |
| XS |
7.6 |
19.4 |
7.7 |
19.6 |
| S |
7.9 |
20.2 |
7.9 |
20.2 |
| M |
8.25 |
21 |
8.0 |
20.8 |
| L |
8.5 |
21.6 |
8.4 |
21.4 |
| XL |
8.75 |
22.2 |
8.6 |
22 |
| 2XL |
9.0 |
22.8 |
8.9 |
22.6 |
| 3XL |
9.25 |
23.4 |
9.2 |
23.2 |
| 4XL |
9.5 |
24 |
9.3 |
23.6 |
| 5XL |
9.75 |
24.4 |
9.4 |
24 |
Women’s Glove Sizing
How to Measure Glove Fitment
Width: Measure around your hand at the widest point (generally just below the knuckle).
Length: Measure from the tip of your middle finger to the bottom of your palm.
Allow +/- 3mm sewing allowance.
| Size |
Width |
Length |
| S |
7.3" |
7.5" |
| M |
7.6" |
7.7" |
| L |
8" |
8" |
| XL |
8.25" |
8.2" |
Youth Glove Sizing
Width: Measure around your hand at the widest point (generally just below the knuckle).
Length: Measure from the tip of your middle finger to the bottom of your palm.
Allow -/+ 3mm sewing allowance.
| Measurement |
2XS |
XS |
S |
M |
L |
| Width |
5.2" |
5.4" |
5.6" |
5.9" |
6.2" |
| Length |
5.5" |
5.75" |
6.1" |
6.3" |
6.7" |
Men's Radial Boot Size Chart
RADIAL BOOT UK SIZE CHART ONLY: The Radial boot runs one size large in UK sizing. Order/purchase one size down in UK. For example, if your size is UK size 9, you are a UK size 8 in the Radial boot.
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| US Size |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
| UK Size |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
| EU Size |
40.5 |
42 |
43 |
44.5 |
45.5 |
47 |
48 |
49.5 |
51 |
Men's Blitz Boot Size Chart
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| US Size |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
| UK Size |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
| EU Size |
40 |
42 |
43 |
44 |
45 |
47 |
48 |
49 |
50 |
Women’s Blitz Boot Sizing
| US Sizing |
UK Size |
EU Sizing |
| 5 |
3 |
35-36 |
| 6 |
4 |
36-37 |
| 7 |
5 |
37-38 |
| 8 |
6 |
38-39 |
| 9 |
7 |
39-40 |
| 10 |
8 |
40-41 |
The size conversion chart above is for reference only. To ensure proper fit, always try on product prior to purchase when possible. Our boots fit true to size and are at industry standard for fitment.
Youth Blitz Boot Sizing
| US Size |
UK Size |
EU Size |
| 1 |
13 |
32 |
| 2 |
1 |
33 |
| 3 |
2 |
34 |
| 4 |
3 |
36 |
| 5 |
4 |
37 |
| 6 |
5 |
38 |
| 7 |
6 |
39 |
The size conversion chart above is for reference only. To ensure proper fit, always try on product prior to purchase when possible. Our boots fit true to size and are at industry standard for fitment.
Mini Boot Sizing
| US Size |
UK Size |
EU Size |
| 10 |
9 |
28 |
| 11 |
10 |
29 |
| 12 |
11 |
30 |
| 13 |
12 |
31 |
The size conversion chart above is for reference only. To ensure proper fit, always try on product prior to purchase when possible. Our boots fit true to size and are at industry standard for fitment.
Men’s Sentry Stealth Protector Sizing
| Size |
Chest Circumference |
Sleeve Length |
| S/M |
34" - 40" |
31" - 33" |
| L/XL |
40" - 46" |
33" - 35" |
| 2XL/3XL |
46" - 52" |
35" - 37" |
Men’s Sentinel Knee Guard Sizing
How to Measure Men's Sentinel Knee Guard Fitment
Measure the circumference of calf and thigh approximately 8" (20cm) above and below the center of the knee.
| Size |
Thigh |
Calf |
| S/M |
16" - 19" |
13" - 15" |
| L/XL |
19" - 22" |
15" - 17" |
| 2XL/3XL |
22" - 25" |
17" - 19" |
Force XP Knee Guard Sizing
Guard Sizing
The measurements below are of the actual product. The measurements can be used as a guide to find your size and fit. Because of the many sizes and shapes of chests, arms, elbows, legs and knees it is impossible to give a fitment for each person. Our guards fit true to size and are at industry standard for fitment.
| Measurement |
Adult S/M |
Adult L/XL |
Adult 2XL/3XL |
| Length |
17.5" |
17.5" |
18" |
| Width - Upper |
17" |
18" |
21" |
| Width - Lower |
16.5" |
17.5" |
21" |
| Elastic - Upper |
16" |
16.5" |
24.5" |
| Elastic - Lower |
14" |
14.5" |
18.5" |
Sector GP & Sector Knee Guard Sizing
| Measurement |
Adult |
| Length |
15" |
| Elastic - Upper |
12.5" |
| Elastic - Lower |
11" |
Quadrant Elbow Guard Sizing
| Measurement |
Adult |
| Length |
12" |
| Width |
4.5" |
| Elastic - Upper |
13" |
| Elastic - Lower |
12.5" |
Quadrant Knee Guard Sizing
| Measurement |
Adult |
| Length |
17" |
| Width |
5.5" |
| Elastic - Upper |
13" |
| Elastic - Lower |
11" |
Sentinel Pro, Sentinel LTD & Sentinel LTD Race Roost Guard Sizing
| Measurement |
XS/S |
M/L |
XL/2XL |
| Chest Girth |
34.5" - 38.5" |
38.5" - 42.5" |
42.5" - 46.5" |
| Torso Height |
15" - 17" |
17" - 19" |
18.9" - 20" |
| Your Height |
57.5" - 64.5" |
64.5" - 71.6" |
71.6" - 76.5" |
Guardian and Guardian MX Roost Guard Sizing
| Measurement |
Adult M/L |
Adult XL/2XL |
| Chest |
33.5" - 37.5" |
37.5" - 41.5" |
| Chest Height |
12.5" |
14" |
| Back Height |
15" |
17" |
Women’s Guardian Sizing
The measurements below are of the actual product. The measurements can be used as a guide to find your size and fit. Because of the many sizes and shapes of chests, arms, elbows, legs and knees it is impossible to give a fitment for each person. Our guards fit true to size and are at industry standard for fitment.
| Measurement |
2XS/XS |
S/M |
| Chest |
20" - 23.5" |
23.5" - 27.5" |
| Chest Height |
9" |
10" |
| Back Height |
12" |
13" |
Guardian Belt Sizing
| Measurement |
Adult S/M |
Adult L/XL |
| Width |
28" - 36" |
36" - 44" |
Youth Guardian, Guardian MX, Sentinel & Sentinel GP Roost Deflector Sizing
Youth Guard Sizing
The measurements below are of the actual product. The measurements can be used as a guide to find your size and fit. Because of the many sizes and shapes of chests, arms, elbows, legs and knees it is impossible to give a fitment for each person. Our guards fit true to size and are at industry standard for fitment.
| Measurement |
2XS/XS |
S/M |
| Chest |
20" - 23.5" |
23.5" - 27.5" |
| Chest Height |
9" |
10" |
| Back Height |
12" |
13" |
Youth Sentinel Knee Guard Sizing
How to Measure Youth Sentinel Knee Guard Size
Measure the circumference of calf and thigh approximately 6" (15cm) above and below the center of the knee.
| Measurement |
S/M |
| Thigh |
10" - 15" |
| Calf |
8" - 12" |
Youth Sector GP & Sector Knee Guard Sizing
Youth Guard Sizing
The measurements below are of the actual product. The measurements can be used as a guide to find your size and fit. Our guards fit true to size and are at industry standard for fitment.
| Measurement |
Youth |
| Length |
12.5" |
| Elastic - Upper |
11" |
| Elastic - Lower |
10" |
Youth Quadrant Elbow Guard Sizing
Youth Guard Sizing
The measurements below are of the actual product. The measurements can be used as a guide to find your size and fit. Our guards fit true to size and are at industry standard for fitment.
| Measurement |
Youth |
| Length |
10" |
| Width |
3.5" |
| Elastic - Upper |
6" |
| Elastic - Lower |
5.5" |
Youth Quadrant Knee Guard Sizing
Youth Guard Sizing
The measurements below are of the actual product. The measurements can be used as a guide to find your size and fit. Our guards fit true to size and are at industry standard for fitment.
| Measurement |
Youth |
| Length |
12" |
| Width |
5" |
| Elastic - Upper |
9.5" |
| Elastic - Lower |
8.5" |
