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Alpinestars is once again leading the way in developing rider safety. Having pioneered countless innovations in boots, suits and gloves, notably the development of external protection on road race boots in the early 80’s and more recently employing the philosophy on its leather suits, they are now introducing a new dimension into race suit technology – a fully autonomous, multiple field data acquisition system.

The Advanced Safety Technology suit (AST).

Fitting telemetry and acquiring data from race bikes and cars has been common practice for some years, however, acquiring data directly from the body of the rider/driver has not and Alpinestars is developing technology to allow technicians the ability to analyze the gravitational and impact forces, as well as the physiological effects experienced by a human when pushing the limits of a high performance race machine.

During the weekend of the German Grand Prix at the Sachsenring, MotoGP rider John Hopkins wore a leather suit equipped with the new A.S.T. system. Although indistinguishable from his usual race suit, John’s body was constantly monitored by a series of accelerometers, impact and physiological sensors.

The impact sensors are mounted on both external and internal surfaces of the suits protectors to measure the loads sustained and absorbed in a fall, without impeding or endangering the rider in any way. The sensors record the maximum impact value subjected to the rider, providing real situation data, above and beyond the test simulations currently conducted in the Alpinestars laboratory.

The custom data processor and solid-state memory, encased in an impact resistant structure and hidden in the back hump on John’s suit, acquire data throughout each session which can be downloaded immediately into a laptop plugged into a connector on the suit. The information can then be studied to analyze pressure point values, lateral G loads experienced, the rider’s pulse and the suit’s cooling performance.

The benefit of developing such technology is the tremendous amount of information that can be gathered about the stresses borne by a rider and the performance of safety equipment during a race and in the event of a fall. Alpinestars’ goal is to develop the technology to measure all the dimensional forces at work upon a rider and to allow greater understanding of material performance thereby improving safety both on the racetrack and ultimately on the road.

New Arrivals

ON SALE
Alpinestars SMX-6 V2 Adult Street Boots (Refurbished, Without Tags)
ON SALE
Alpinestars Air Plus V2 Gore-Tex XCR Adult Street Boots (Refurbished, Without Tags)
ON SALE
Alpinestars Bionic 7 Knee Brace Adult Street Body Armor (Refurbished, Without Tags)
ON SALE
Alpinestars Sequence Pro Base Layer Short Men's Off-Road Body Armor (Brand New)
ON SALE
Alpinestars Venture R Men's Off-Road Jackets (Brand New)
ON SALE
Alpinestars Supertech S-M8 Adult Off-Road Helmets (Brand New)
ON SALE
Alpinestars SMX-E Men's Off-Road Gloves (Brand New)
ON SALE
Alpinestars Mustang V2 Men's Cruiser Gloves (Brand New)
ON SALE
Alpinestars Stella Women's Off-Road Gloves (Refurbished, Without Tags)
ON SALE
Alpinestars Neck Support Youth Off-Road Body Armor (Refurbished, Without Tags)
ON SALE
Alpinestars Bionic 10 Carbon Knee Brace Men's Off-Road Body Armor (Refurbished, Without Tags)
ON SALE
Alpinestars MX Pro Men's Off-Road Socks (Refurbished, Without Tags)

Lookbooks

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Size Guide

Alpinestar Men Size Chart

HOW TO MEASURE

A | CHEST

Measure around the fullest part, under the armpits, keeping the tape horizontal.

B | WAIST

Measure around the natural waist line, inline with the navel, keeping the tape horizontal.

C | HIP

Measure around the fullest part of your hips, about 20cm below waist line, keeping the tape horizontal.

D | THIGH

Measure around the thigh just below the crotch, keeping the tape horizontal.

E | INSEAM

Stand against a wall, ask someone else to measure from the crotch to the bottom of your leg.

F | ARM LENGTH

Measure from shoulder (Humerus) to wrist.

G | HEIGHT

Stand against a wall, ask someone else to measure from the oor to the top of your head, keeping the tape vertical.

MEN'S APPAREL SIZE CHART (INCHES)

Euro Size 40 42 44 46 48 50 52 54 56 58 60 62 64
International Size XXS XXS | XS XS | S S S | M M | L L XL L | XL XL | XXL XXL XXL | 3XL 3XL | 4XL
U.S. Size 30 32 34 36 38 40 42 44 46 48 50 52 54
U.S. Pant Size 24 26 28 30 32 34 36 38 40 42 44 46 48
A | Chest (Inches) 30 3/4- 32 1/4 32 1/4- 33 7/8 33 7/8- 35 3/8 35 3/8- 37 37 - 38 5/8 38 5/8- 40 1/8 40 1/8- 41 3/4 41 3/4- 43 1/4 43 1/4- 44 7/8 44 7/8- 46 1/2 46 1/2- 48 48 - 49 5/8 49 5/8- 51 1/8
B | Waist (Inches) 25 1/4- 26 3/4 26 3/4- 28 3/8 28 3/8- 29 7/8 29 7/8- 31 1/2 31 1/2- 33 1/8 33 1/8- 34 5/8 34 5/8- 36 1/4 36 1/4- 37 3/4 37 3/4- 39 1/4 39 1/4- 41 41 - 42 1/2 42 1/2- 44 1/8 44 1/8- 45 5/8
C | Hip (Inches) 31 1/8- 32 5/8 32 5/8- 34 1/4 34 1/4- 35 7/8 35 7/8- 37 3/8 37 3/8- 39 39 - 40 1/2 40 1/2- 42 1/8 42 1/8- 43 3/4 43 3/4- 45 1/4 45 1/4- 46 7/8 46 7/8- 48 3/8 48 3/8- 50 50 - 51 5/8
D | Thigh (Inches) 19 3/8- 19 5/8 19 5/8- 20 1/8 20 1/2- 20 7/8 21 1/4- 21 5/8 22 - 22 1/2 22 7/8- 23 1/4 23 5/8- 24 24 3/8- 24 3/4 25 1/4- 25 5/8 26 - 26 3/8 26 3/4- 27 1/8 27 1/2- 28 28 3/8- 28 1/2
E | Inseam (Inches) 28 - 28 3/4 28 3/4- 29 1/8 29 1/2- 29 7/8 30 3/8- 30 3/4 31 1/8- 31 1/2 31 7/8 - 32 1/4 32 5/8 - 33 1/8 33 1/2 - 33 7/8 34 1/4 - 34 5/8 35 - 35 3/8 35 - 35 3/8 35 7/8 - 36 1/4 35 7/8 - 36 1/4
F | Outer Arm (Inches) 19 1/4 - 20 1/8 20 1/8 - 20 3/4 20 7/8 - 21 1/4 21 5/8 - 22 22 1/2 - 22 7/8 23 1/4 - 23 5/8 24 - 24 3/8 24 3/4 - 25 1/4 25 5/8 - 26 26 3/8 - 26 3/4 26 3/8 - 26 3/4 27 1/8 - 27 1/2 27 1/8 - 27 1/2
G | Height (Inches) 4'11" - 5'1" 5'2" - 5'4" 5'4" - 5'5 5'6" - 5'7" 5'7" - 5'8" 5'9" - 5'10" 5'11" - 6'" 6" - 6'2" 6'2" - 6'3" 6'3" - 6'5" 6'3" - 6'5" 6'5" - 6'6" 6'5" - 6'6"

MEN'S APPAREL SIZE CHART (CM)

Euro Size 40 42 44 46 48 50 52 54 56 58 60 62 64
International Size XXS XXS | XS XS | S S S | M M | L L XL L | XL XL | XXL XXL XXL | 3XL 3XL | 4XL
U.S. Size 30 32 34 36 38 40 42 44 46 48 50 52 54
U.S. Pant Size 24 26 28 30 32 34 36 38 40 42 44 46 48
A. Chest (cm) 78 - 82 82 - 86 86 - 90 90 - 94 94 - 98 98 - 102 102 - 106 106 - 110 110 - 114 114 - 118 118 - 122 122 - 126 126 - 130
B. Waist (cm) 64 - 68 68 - 72 72 - 76 76 - 80 80 - 84 84 - 88 88 - 92 92 - 96 96 - 100 100 - 104 104 - 108 108 - 112 112 - 116
C. Hip (cm) 79 - 83 83 - 87 87 -91 91 - 95 95 - 99 99 - 103 103 - 107 107 - 111 111 - 115 115 - 119 119 - 123 123 - 127 127 - 131
D. Thigh (cm) 48 - 49 50 - 51 52 - 53 54 - 55 56 - 57 58 - 59 60 - 61 62 - 63 64 - 65 66 - 67 68 - 69 70 - 71 72 - 73
E. Inseam (cm) 71 - 72 73 - 74 75 - 76 77 - 78 79 - 80 81 - 82 83 - 84 85 -86 87 - 88 89 - 90 89 - 90 91 - 92 91 - 92
F. Outer Arm (cm) 49 - 50 51 - 52 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 65 - 66 67 - 68 67 - 68 69 - 70 69 - 70
G. Height (cm) 150 - 156 157 - 163 164 - 167 168 - 171 172 - 175 176 - 179 180 - 183 184 - 187 188 - 191 192 - 195 192 - 195 196 - 199 196 - 199

Alpinestar Mens Size Chart

Europe 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
USA 3.5 4 5 6 6.5 7.5 8 9 9.5 10.5 11.5 12 12.5 13.5 14
Japan 22.5 23 24 25 25.5 26 26.5 27.5 28.5 29.5 30 30.5 31.5 32 33

Alpinestar Mens Size Chart

A | CHEST

Measure around the chest under the armpits, keeping the tape horizontal.

B | BUST

Measure around the fullest part of the bust, keeping the tape horizontal.

C | WAIST

Measure around the natural waist line, inline with the navel, keeping the tape horizontal.

D | HIP

Measure around the fullest part of your hips, about 20cm below waist line, keeping the tape horizontal.

E | THIGH

Measure around the thigh just below the crotch, keeping the tape horizontal.

F | INSEAM

Stand against a wall, ask someone else to measure from the crotch to the bottom of your leg.

G | ARM LENGTH

Measure from shoulder (Humerus) to wrist.

H | HEIGHT

Stand against a wall, ask someone else to measure from the floor to the top of your head, keeping the tape vertical.

Euro Size 36 38 40 42 44 46 48 50 52 54
International Size XXS XXS | XS XS | S M L L | XL XL | XXL XXL XXL | 3XL 3XL
U.S. Size 0 2 4 6 8 10 12 14 16 18
U.S. Pant Size 22 24 26 28 30 32 34 36 38 40
A. Chest (Inches) 29 1/8 - 30 3/4 30 3/4 - 32 1/4 32 1/4 - 33 7/8 33 7/8 - 35 3/8 35 3/8 - 37 37 - 38 5/8 38 5/8 - 40 1/8 40 1/8 - 41 3/4 41 3/4 - 43 1/4 43 1/4 - 44 7/8
B. Bust (Inches) 30 3/4 - 32 1/4 32 1/4 - 33 7/8 33 7/8 - 35 3/8 35 3/8 - 37 37 - 38 5/8 38 5/8 - 40 1/8 40 1/8 - 41 3/4 41 3/4 - 43 1/4 43 1/4 - 44 7/8 44 7/8 - 46 1/2
C. Waist (Inches) 22 7/8 - 24 3/8 24 3/8 - 26 26 - 27 1/2 27 1/2 - 29 1/8 29 1/8 - 30 3/4 30 3/4 - 32 1/4 32 1/4 - 33 7/8 33 7/8 - 35 3/8 35 3/8 - 37 37 - 38 5/8
D. Hip (Inches) 32 1/4 - 33 7/8 33 7/8 - 35 3/8 35 3/8 - 37 37 - 38 5/8 38 5/8 - 40 1/8 40 1/8 - 41 3/4 41 3/4 - 43 1/4 43 1/4 - 44 7/8 44 7/8 - 46 1/2 46 1/2 - 48
E. Thighs (Inches) 19 5/8 - 20 1/8 20 1/2 - 20 7/8 21 1/4 - 21 5/8 22 - 22 1/2 22 7/8 - 23 1/4 23 5/8 - 24 24 3/8 - 24 3/4 25 1/4 - 25 5/8 26 - 26 3/8 26 3/4 - 27 1/8
F. Inner Legs (Inches) 28 3/8 - 28 3/4 29 1/8 - 29 1/2 29 7/8 - 30 3/8 30 3/4 - 31 1/8 31 1/2 - 31 7/8 32 1/4 - 32 5/8 33 1/8 - 33 1/2 33 1/8 - 33 1/2 33 7/8 - 34 1/4 33 7/8 - 34 1/4
G. Outer Legs (Inches) 19 5/8 - 20 1/8 20 1/2 - 20 7/8 21 1/4 - 21 5/8 22 - 22 1/2 22 7/8 - 23 1/4 23 5/8 - 24 24 3/8 - 24 3/4 24 3/8 - 24 3/4 25 1/4 - 25 5/8 25 1/4 - 25 5/8
H. Height (Inches) 5'2"- 5'3" 5'4"- 5'5" 5'5"- 5'6" 5'7"- 5'8" 5'8"- 5'9" 5'10"- 5'11" 5'11"- 6'" 5'11"- 6'" 6'1"- 6'2" 6'1"- 6'2"

Alpinestar Womens Size Chart

Europe 36 37 38 39 40 41 42 43 44
USA 5 6 7 8 8.5 9 10 11 11.5
Japan 22.5 23 24 25 25.5 26 26.5 27.5 28

Alpinestar Gloves Size Chart

 
Measurement Letter Sizing Numeric Sizing
2 1/8" - 2 5/8" XS 7
2 5/8" - 3 1/8"SM 8
3 1/8" - 3 5/8" MD 9
3 5/8" - 4 1/8" LG 10
4 1/8" - 4 5/8" XL 11
4 5/8" - 5 1/8" XXL 12
5 1/8" - 5 5/8" XXXL 13

Alpinestar Boots Size Chart

Off-Road Boots

   
US5 6 7 8 9 10 11 12 13 14 15 16
EU38 39 40.5 42 43 44.5 45.5 47 48 49.5 51 52

Road Boots

   
US3.5 4 5 6 6.5 7.5 8 9 9.5 10.5 11.5 12 12.5 13.5 14
EU36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Alpinestar Jackets Size Chart

Leather Jacket

Size A| Chest B| Waist C| Hip D| Height
Inches Centimeters Inches Centimeters Inches Centimeters Inches Centimeters
46 36 1/4 in 92 cm 29 7/8 in 76 cm 36 1/4 in 92 cm 5' 9" 174 cm 
48 37 3/4 in 96 cm 31 1/2 in 80 cm 37 3/4 in 96 cm 5'10" 177 cm
50 39 3/8 in 100 cm 33 1/8 in 84 cm 39 3/8 in 100 cm 5' 11" 180 cm
52 41 in 104 cm 34 5/8 in 88 cm 41 in 104 cm 6' 183 cm
54 42 1/2 in 108 cm 36 1/4 in 92 cm 42 1/2 in 108 cm 6' 1" 186 cm
56 44 1/8 in 112 cm 37 3/4 in 96 cm 44 1/8 in 112 cm 6' 3" 189 cm
58 45 5/8 in 116 cm 39 3/8 in 100 cm 45 5/8 in 116 cm 6' 4" 192 cm
60 47 1/4 in 120 cm 41 in 104 cm 47 1/4 in 120 cm 6' 5" 195 cm
62 48 3/4 in 124 cm 42 1/2 in 108 cm 48 3/4 in 124 cm 6' 6" 198 cm
64 50 1/4 in 128 cm 44 in 112 cm 50 1/4 in 128 cm 6' 6" 198 cm

Alpinestar Leather Suit Size Chart

Leather Suit Jacket

Size A| Chest B| Waist C| Hip D| Inseam E| Height
US EU Inches Centimeters Inches Centimeters Inches Centimeters Inches Centimeters Inches Centimeters
36 46 36 1/4 in 92 cm 29 7/8 in 76 cm 36 1/4 in 92 cm 30 in 76.2 cm 5' 9" 174 cm 
38 48 37 3/4 in 96 cm 31 1/2 in 80 cm 37 3/4 in 96 cm 32 in 81.3 cm 5'10" 177 cm
40 50 39 3/8 in 100 cm 33 1/8 in 84 cm 39 3/8 in 100 cm 34 in 86.4 cm 5' 11" 180 cm
42 52 41 in 104 cm 34 5/8 in 88 cm 41 in 104 cm 34 in 86.4 cm 6' 183 cm
44 54 42 1/2 in 108 cm 36 1/4 in 92 cm 42 1/2 in 108 cm 36 in 91.4 cm 6' 1" 186 cm
46 56 44 1/8 in 112 cm 37 3/4 in 96 cm 44 1/8 in 112 cm 36 in 91.4 cm 6' 3" 189 cm
48 58 45 5/8 in 116 cm 39 3/8 in 100 cm 45 5/8 in 116 cm 38 in 96.5 cm 6' 4" 192 cm
50 60 47 1/4 in 120 cm 41 in 104 cm 47 1/4 in 120 cm 38 in 96.5 cm 6' 5" 195 cm
- 62 48 3/4 in 124 cm 42 1/2 in 108 cm 48 3/4 in 124 cm 40 in 101.5 cm 6' 6" 198 cm
- 64 50 1/4 in 128 cm 44 in 112 cm 50 1/4 in 128 cm 40 in 101.5 cm 6' 6" 198 cm

Alpinestar Gloves Size Chart


Measurement Letter Sizing Numeric Sizing
2 1/8" - 2 5/8" XS 7
2 5/8" - 3 1/8" SM 8
3 1/8" - 3 5/8" MD 9
3 5/8" - 4 1/8" LG 10
4 1/8" - 4 5/8" XL 11
4 5/8" - 5 1/8" XXL 12
5 1/8" - 5 5/8" XXXL 13

Alpinestar Womens Off-Road Boots Size Chart

Off-Road Boots

US 6 7 8 9 10
EU 37 38 39 41 42

Road Boots

US 5.5 6 7 8 8.5 9.5 10 11
EU 36 37 38 39 40 41 42 43

Alpinestar Womens Jackets Size Chart

Leather Jackets

Size A| Bust B| Waist C| Hip D| Height
US EU Inches Centimeters Inches Centimeters Inches Centimeters Inches Centimeters
0 36 31 1/2 in 80 cm 23 1/2 in 60 cm 33 in 84 cm 5' 3" 160 cm
2 38 33 in 84 cm 25 1/4 in 64 cm 34 3/4 in 88 cm 5' 4" 163 cm
4 40 34 3/4 in 88 cm 26 3/4 in 68 cm 36 1/4 in 92 cm 5' 5" 166 cm
6 42 36 1/4 in 92 cm 28 1/4 in 72 cm 37 3/4 in 96 cm 5' 7" 169 cm
8 44 37 3/4 in 96 cm 30 in 76 cm 39 1/4 in 100 cm 5' 8" 172 cm
10 46 39 1/4 in 100 cm 31 1/2 in 80 cm 41 in 104 cm 5' 9" 175 cm
12 48 41 in 104 cm 33 1/4 in 84 cm 42 1/2 in 108 cm 5' 10" 178 cm
14 50 41 1/2 in 108 cm 34 3/5 in 88 cm 44 in 112 cm 5' 11" 181 cm

Alpinestar Womens Leather SUit Size Chart

Leather Suit

Size A| Bust B| Waist C| Hip D| Inseam E| Height
US EU Inches Centimeters Inches Centimeters Inches Centimeters Inches Centimeters Inches Centimeters
0 36 31 1/2 80 cm 23 1/2 60 cm 33 84 cm 30 1/4 77 cm 5' 3" 160 cm
2 38 33 in 84 cm 25 1/4 in 64 cm 34 3/4 in 88 cm 31 in 79 cm 5' 4" 163 cm
4 40 34 3/4 in 88 cm 26 3/4 in 68 cm 36 1/4 in 92 cm 31 in 79 cm 5' 5" 166 cm
6 42 36 1/4 in 92 cm 28 1/4 in 72 cm 37 3/4 in 96 cm 32 in 81 cm 5' 7" 169 cm
8 44 37 3/4 in 96 cm 30 in 76 cm 39 1/4 in 100 cm 32 in 81 cm 5' 8" 172 cm
10 46 39 1/4 in 100 cm 31 1/2 in 80 cm 41 in 104 cm 32 3/4 in 83 cm 5' 9" 175 cm
12 48 41 in 104 cm 33 1/4 in 84 cm 42 1/2 in 108 cm 33 1/2 in 85 cm 5' 10" 178 cm
14 50 41 1/2 in 108 cm 34 3/5 in 88 cm 44 in 112 cm 34 1/4 in 87 cm 5' 11" 181 cm

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