Alpinestars Atem V5 Leather Jacket
- Atem v5 Leather Jacket is a racing jacket engineered and optimized for sports bike riders, with race-derived features, technology and materials including a dedicated ‘Race’ fit with pre-curved arms for maximum riding performance
- Alpinestars Flex Plus ‘Race’ leather throughout, race-proven protection on the shoulders and elbows, while delivering optimum levels of rider comfort
- Alpinestars composite stretch technology, A-CS® Plus, stretch panels on the torso for exceptional breathability, comfort, and freedom of movement, as well as delivering a lighter weight and a lower profile than a traditional leather accordion panel (the A-CS® Plus panels are about nine percent lighter than leather panels). Another key advantage of using A-CS® Plus is superior stretch performance; A-CS® Plus has about 30 percent elongation, and offers an increase in tear resistance of 300% compared to HRSF (Hyper Resistant Stretch Fiber), and an increase in cut resistance by 600% versus leather
- RIDEKNIT® engineered inner arms; combines high abrasion and tear resistance with high flexibility, comfort and mechanical stretch while still delivering superior comfort and high levels of breathability
- Flex Plus bovine ‘Race’ leather construction is 10% lighter than regular bovine leather, while delivering 80% more adaptability for superior freedom of movement, an ultra-adaptive race fit, and enhanced abrasion and tear resistance
- Extensive technical stretch panels under the arms, on the inner arms, and around the neck for an optimized fit
- 3D pattern body mapping for an enhanced race fit
- Dual density DFS RR shoulder and elbow protectors for superior friction control
- GP elbow armor for additional impact protection in a key area
- Nucleon Flex Plus shoulder armor for superior impact protection
- Tech-Air® 5 and Tech-Air® 3 ready
- Low profile sports collar construction for rider comfort and aerodynamic performance
- Hook and loop neck closure with large built-in flap for a secure closure
- Ergonomic hook and loop cuffs with a zippered sleeve on the forearm for ease of use
- Streamlined speed hump for enhanced aerodynamic performance and enhanced ventilation
- Hump is equipped with a chamber to accommodate hydration pouch
- Waterproof inner compartment for safe and secure storage of valuables
- Two zippered external side pockets for practical and secure storage
- Mesh interior comfort liner with pockets to accommodate a back protector or a split chest protector
- 3/4 waist zip for a secure connection with Alpinestars pants
- Cut longer on the back for greater coverage in the riding position
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Sizing Information
This product is sold in European sizes. The overall sizing of the jackets is accurate to the Alpinestars sizing chart for overall chest size (US chest size in inches is 10 points less than the European jacket size). I’d suggest you measure yourself with a tape and get your chest size, and if you have a bit of a belly you can also check your max belly. If you know your suit coat size, that works too. Then you can use the size chart to pick the smallest size jacket that will be big enough for both your chest and belly using the chart below.
This is a sport cut jacket and has a trim fit, so if you are between sizes, I’d suggest choosing the larger. To help with those that have a more broad chest, this model has a great deal of flexible fabric material in the underarm and behind the shoulders. And those stretch areas really do stretch a lot.
Sizing Tip for Those Using Upgraded Armor: If you plan to add the protective armor to this jacket, I’d suggest adding to your chest and belly measurements before choosing a size using the chart. Add 1” to both your chest and belly for adding any of the back protectors. If you plan on adding the chest armor, add another inch to the chest. So for both the chest and back armor, add 2” to your chest and 1” to your belly.
| Euro Size | Max Chest Size (inches) | Max Belly Size (inches) |
| 46 | 36 | 32 |
| 48 | 38 | 34 |
| 50 | 40 | 36 |
| 52 | 42 | 38 |
| 54 | 44 | 40 |
| 56 | 46 | 42 |
| 58 | 48 | 44 |
| 60 | 50 | 46 |
