The T-GP Air Jacket is a lightweight textile jacket optimized for airflow and breathability, offering sports riders race-derived protection, style and technical features in a jacket optimized for warm weather riding on the roads. 
Sizing: 
Video model Norman is 6'3'’, 220lbs with 34 US jeans / vanity size, 38.5” natural waist at belly button, and 44" chest measurement
He is wearing a size XL, and the fit is spot on
Construction:
2 season, hot weather textile / mesh sport commuter jacket
Aero race hump at rear
Hard shoulder and elbow armor appliques
CE A rated
Racetrack looks in a lighter weight, lighter duty street-oriented package
Takes the Alpinestars street T-GP Plus R Jacket platform and moves a step further into the race direction
Ultra low-profile collar
Multi-panel 450D polyfabric construction for strength, comfort and superior abrasion resistance
Aerodynamic, Alpinestars ‘Race-spec’ Supertech R10 aero hump
Engineered to work in conjunction with Alpinestars S-R10 Helmet for optimal streamlining and aerodynamic racing performance
Ventilation:
Laser perforated panels, with 2D and 3D mesh panels for superior airflow and ventilation
Large technical open mesh panels for cooling airflow
Protection & Safety:
Ultra-soft and impact-absorbing Nucleon PLASMA Pro CE Level 2 elbow, knee and shoulder armor included
CE Class A garment
Tech-Air® 7x, Tech-Air® 5 PLASMA and Tech-Air® 3 ready
Dual density, racing-derived integrated Racing GP DFS (Dynamic Friction Shield) on the shoulders and elbows for superior friction control
Comfort:
Sport fit with an elongated rear for better coverage and enhanced wind protection in the riding position. 
Hidden, race-derived  autolock zip on wrists ensures a secure. precise fit while preventing accidental opening, and is optimized for use with Alpinestars gloves. 
Hook and loop neck closure with the large MotoGP inspired tab for a secure closure
Pre-curved elbow construction for reduced rider fatigue
Soft touch synthetic suede collar and cuffs for superior rider comfort
Integrated waist adjustment flaps for an optimized performance fit
Pockets:
Pockets inside and outside the jacket for enhanced real-world practicality.
Other Features:
Jacket-to-pant connection loops