WARNING: California’s Proposition 65
Proposition 65 Warning for California Consumers
Alpinestars Tech-Air 3 System Adult Street Body Armor
Light, autonomous airbag system designed to be worn over or under the motorcycle jacket and is an effective and practical choice for touring riders, urban city commuters and light off-road adventure riders.
Wearable Tech-Air System uses the Tech-Air 5 Street crash detection algorithm that leverages AI to accurately monitor when to deploy the airbag in the event of a crash.
The Tech-Air 3 incorporates 6 integrated sensors (3 accelerometers [1 triaxial accelerometer], and 3 gyroscopes [1 triaxial gyroscope]) to provide the best crash monitoring performance and active airbag protection in a variety of dynamic street riding scenarios, even when stopped.
An LED display on the front chest indicates the airbag's operational status. LED display also incorporates a haptic alert, which vibrates to confirm the System is armed and alerts the rider when the battery is running low.
Alpinestars' crash detection triggering algorithm has been developed and refined with over 2 million kilometers of riding data and over 2000 crashes, allowing the system to accurately assess when to deploy the airbag ahead of an impact or other dangerous situation like a lowside or highside crash, and in the event that Tech-Air 3 detects the start of a crash.
The system will activate the protective airbag in milliseconds, depending on the size of the airbag - once inflated, the airbag provides full upper body protection, keeping motorcycle riders safe by covering the rider's full chest and full back. Protects full chest and full back.
Integrated back protector pocket on the back can house additional passive back protection.
Bluetooth connectivity to a Tech-Air App allows you to monitor the System's operational status, battery status, as well as provides a detailed map of your ride via MyRide.
Can be worn both over and under a motorcycle jacket, including any Alpinestars' compatible jacket, any leather or textile jacket, providing that the jacket has sufficient space to accommodate the inflation of the Airbag System.
New or Brand New - Brand new item in original packaging (original manufacturer's warranty may apply).
Refurbished - Professionally restored and in perfect working condition. Original packaging may be missing or slightly damaged.
Used - Item has seen limited use but remains in good working condition. May show some limited signs of wear with small scratches or cosmetic blemishes. May arrive with damaged packaging or be repackaged.
Refurbished, Without Tags - Same as refurbished. Item may arrive with mising labels or tags.
Refurbished, Last Call - Same as refurbished. Last call or closeout item.
Measure around the fullest part, under the armpits, keeping the tape horizontal.
Measure around the natural waist line, inline with the navel, keeping the tape horizontal.
Measure around the fullest part of your hips, about 20cm below waist line, keeping the tape horizontal.
Measure around the thigh just below the crotch, keeping the tape horizontal.
Stand against a wall, ask someone else to measure from the crotch to the bottom of your leg.
Measure from shoulder (Humerus) to wrist.
Stand against a wall, ask someone else to measure from the oor to the top of your head, keeping the tape vertical.
| 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" |
| 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 |
| Europe | 38 | 39 | 40.5 | 42 | 43 | 44.5 | 45.5 | 47 | 48 | 49.5 | 51 | 52 |
| USA | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Japan | 24 | 25 | 25.5 | 26.5 | 27.5 | 29 | 29.5 | 30.5 | 31.5 | 32.5 | 33.5 | 34.5 |
Measure around the chest under the armpits, keeping the tape horizontal.
Measure around the fullest part of the bust, keeping the tape horizontal.
Measure around the natural waist line, inline with the navel, keeping the tape horizontal.
Measure around the fullest part of your hips, about 20cm below waist line, keeping the tape horizontal.
Measure around the thigh just below the crotch, keeping the tape horizontal.
Stand against a wall, ask someone else to measure from the crotch to the bottom of your leg.
Measure from shoulder (Humerus) to wrist.
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" |
| Europe | 37 | 38 | 39 | 41 | 42 |
| USA | 6 | 7 | 8 | 9 | 10 |
| Japan | 23 | 24 | 25 | 26 | 26.5 |
| 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 |
| US | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| EU | 38 | 39 | 40.5 | 42 | 43 | 44.5 | 45.5 | 47 | 48 | 49.5 | 51 | 52 |
| US | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| EU | 38 | 39 | 40.5 | 42 | 43 | 44.5 | 45.5 | 47 | 48 | 49.5 | 51 | 52 |
| Size | A. CHEST | B. WAIST | F. OUTER ARM | G. HEIGHT | ||||
|---|---|---|---|---|---|---|---|---|
| US | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters |
| XXS | 30 3/4 | 78 | 24 3/4 | 63 | 19 1/4 | 49 | 61 3/4 | 157 |
| XS | 32 7/8 | 83.5 | 27 1/8 | 69 | 20 1/8 | 51 | 63 3/4 | 162 |
| S | 32 7/8 | 83.5 | 27 1/8 | 69 | 20 1/4 | 51.5 | 64 1/8 | 163 |
| M | 35 | 89 | 29 1/2 | 75 | 21 | 53.5 | 66 1/8 | 168 |
| L | 37 1/4 | 94.5 | 31 7/8 | 81 | 21 1/2 | 54.5 | 66 1/2 | 169 |
| XL | 39 3/8 | 100 | 34 1/4 | 87 | 22 1/4 | 56.5 | 68 1/2 | 174 |
| XXL | 41 1/2 | 105.5 | 36 1/4 | 92 | 23 1/4 | 59 | 68 7/8 | 175 |
| 3XL | 43 3/4 | 111 | 38 1/4 | 97 | 23 5/8 | 60 | 70 1/2 | 179 |
| 4XL | 45 7/8 | 116.5 | 40 1/8 | 102 | 24 3/8 | 62 | 70 7/8 | 180 |
| 5XL | 48 | 122 | 42 1/8 | 107 | 24 3/4 | 63 | 72 1/2 | 184 |
| 6XL | 50 1/4 | 127.5 | 44 1/8 | 112 | 25 5/8 | 65 | 72 7/8 | 185 |
| Size | A| Chest | B| Waist | C| Hip | D| Inseam | E| Height | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| EU | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters |
| 44 | 33 7/8 | 86 | 28 3/8 | 72 | 34 1/4 | 87 | 29 1/2 | 75 | 65 | 165 |
| 46 | 35 3/8 | 90 | 29 7/8 | 76 | 35 7/8 | 91 | 29 7/8 | 76 | 66 1/8 | 168 |
| 48 | 35 3/8 | 90 | 29 7/8 | 76 | 35 7/8 | 91 | 30 1/4 | 77 | 66 1/2 | 169 |
| 50 | 37 | 94 | 31 1/2 | 80 | 37 1/2 | 95 | 30 3/4 | 78 | 67 3/4 | 172 |
| 52 | 37 | 94 | 31 1/2 | 80 | 37 1/2 | 95 | 31 | 79 | 68 1/8 | 173 |
| 54 | 38 5/8 | 98 | 33 1/8 | 84 | 39 | 99 | 31 1/2 | 80 | 69 3/4 | 176 |
| 56 | 38 5/8 | 98 | 33 1/8 | 84 | 39 | 99 | 31 7/8 | 81 | 69 3/4 | 177 |
| 58 | 40 1/8 | 102 | 34 5/8 | 88 | 40 1/2 | 103 | 32 1/4 | 82 | 70 7/8 | 180 |
| 60 | 40 1/8 | 102 | 34 5/8 | 88 | 40 1/2 | 103 | 32 5/8 | 83 | 71 1/4 | 181 |
| 62 | 41 3/4 | 106 | 36 1/4 | 92 | 42 1/8 | 107 | 33 1/8 | 84 | 72 1/8 | 184 |
| 64 | 41 3/4 | 106 | 36 1/4 | 92 | 42 1/8 | 107 | 33 1/2 | 85 | 72 7/8 | 185 |
| 66 | 43 1/4 | 110 | 37 3/4 | 96 | 43 3/4 | 111 | 33 7/8 | 86 | 72 7/8 | 188 |
| 68 | 43 1/4 | 110 | 37 3/4 | 96 | 43 3/4 | 111 | 33 7/8 | 86 | 74 | 188 |
| 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 |
| US | 6 | 7 | 8 | 9 | 10 |
| EU | 37 | 38 | 39 | 41 | 42 |
| US | 6 | 7 | 8 | 9 | 10 |
| EU | 37 | 38 | 39 | 41 | 42 |
| Size | A| Chest | B| Bust | C| Waist | D| Hip | G| Outer Arm | H| Height | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| US | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters | Inches | Centimeters |
| XS | 29 1/8 | 74 | 30 3/4 | 78 | 22 7/8 | 58 | 32 1/4 | 82 | 19 3/4 | 50 | 61 3/4 | 157 |
| S | 31 1/2 | 80 | 33 1/8 | 84 | 25 1/4 | 64 | 34 5/8 | 88 | 20 5/8 | 52.5 | 64 | 162.5 |
| M | 33 7/8 | 86 | 35 3/8 | 90 | 27 1/2 | 70 | 37 | 94 | 21 5/8 | 55 | 66 1/8 | 168 |
| L | 35 3/8 | 90 | 37 | 94 | 29 1/8 | 74 | 38 5/8 | 98 | 22 5/8 | 57.5 | 67 3/4 | 172 |
| XL | 37 1/4 | 94.5 | 38 3/4 | 98.5 | 30 7/8 | 78.5 | 40 3/8 | 102.5 | 23 3/8 | 59.5 | 69 1/2 | 176.5 |
| XXL | 39 | 99 | 40 1/2 | 103 | 32 5/8 | 83 | 42 1/8 | 107 | 24 1/4 | 61.5 | 71 | 180.5 |
| 3XL | 39 | 99 | 40 1/2 | 103 | 32 5/8 | 83 | 42 1/8 | 107 | 24 1/4 | 61.5 | 71 | 180.5 |
| 4XL | 41 | 104 | 42 1/2 | 108 | 34 5/8 | 88 | 44 1/8 | 112 | 25 1/4 | 64 | 72 7/8 | 185 |
| 5XL | 43 | 109 | 44 1/2 | 113 | 36 5/8 | 93 | 46 | 117 | 25 7/8 | 65.5 | 74 | 188 |
| Size | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 |
|---|---|---|---|---|---|---|---|---|---|
| A. Chest (cm) | 78 | 82 | 82 | 86 | 86 | 90 | 90 | 94 | 94 |
| B. Bust (cm) | 82 | 86 | 86 | 90 | 90 | 94 | 94 | 98 | 98 |
| C. Waist (cm) | 62 | 66 | 66 | 70 | 70 | 74 | 74 | 78 | 78 |
| D. Hip (cm) | 86 | 90 | 90 | 94 | 94 | 98 | 98 | 102 | 102 |
| F. Inner Leg (cm) | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 |
| G. Outer Arm (cm) | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 |
| H. Height (cm) | 161 | 164 | 165 | 168 | 169 | 172 | 173 | 176 | 177 |
| A. Chest (in) | 30 3/4 | 32 1/4 | 32 1/4 | 33 7/8 | 33 7/8 | 35 3/8 | 35 3/8 | 37 | 37 |
| B. Bust (in) | 32 1/4 | 33 7/8 | 33 7/8 | 35 3/8 | 35 3/8 | 37 | 37 | 38 5/8 | 38 5/8 |
| C. Waist (in) | 24 3/8 | 26 | 26 | 27 1/2 | 27 1/2 | 29 1/8 | 29 1/8 | 30 3/4 | 30 3/4 |
| D. Hip (in) | 33 7/8 | 35 3/8 | 35 3/8 | 37 | 37 | 38 5/8 | 38 5/8 | 40 1/8 | 40 1/8 |
| F. Inner Leg (in) | 29 1/8 | 29 1/2 | 29 7/8 | 30 1/4 | 30 3/4 | 31 1/8 | 31 1/8 | 31 7/8 | 31 7/8 |
| G. Outer Arm (in) | 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 |
| H. Height (in) | 63 3/8 | 64 5/8 | 65 | 66 1/8 | 66 1/2 | 67 3/4 | 68 1/8 | 69 1/4 | 69 5/8 |
* Sizing information is provided by the manufacturer and does not guarantee a perfect fit.
