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This sheet summarizes the information I was able to glean on the net about the Alpinestars Bio Air level 2 protective shells.

Synthesis: Very good protection (25% above standard), very good ventilation, and reasonable price.

Marketing:

Sold in complete kit shoulders + elbows, around 33e :

• Kit in size B :
  • Elbow B/knee A : Dimensions and weight not found
  • Shoulder B : Dimensions and weight not found
• Kit in size A :
  • Elbow A: Dimensions and weight not found
  • Shoulder A: Dimensions and weight not found

Quite easy to find on the net (pay attention to the size A or B: If they fit in your clothes it is better to prefer the B sizes, which are bigger).

Characteristics of the shells :

• Certification : Level 2 T+ T- ¹
• Actual protection: The manufacturer announces < 16 kN
• Other statement: MotoCAP tests (Australian independent tester) would have noted an average of about 13 kN and a maximum of 17 kN (standard: 20 kN on average, maximum 30 kN) ²
• Manufacturing: Italy
• Advertised durability: ?
• Type of materials : Rigid vulcanized materials
• Ventilation : Very good

Comfort and comparison with other brands :

My opinion: The material being rigid, one can imagine that the hulls follow the movements less than the viscoelastic ones used by SAS-TEC, BMW, etc.

On the other hand, the ventilation is obviously superior to all the competitors of level 2 (approaching: REV’IT Seeflex).

For less ventilated but more protective (<12 kN), more covering and at a similar price, it is interesting to look at SAS-TEC: My article on SAS-TEC SC1/EVO1, EVO2 and EVO3

Photos :

General photos:

Kit size B :

Kit size A :

Level 2 T+ T- :

Comparisons:

These photos are from the conversation advrider.com: CE2 Replacement Armor Database / Comparison.

Forcefield Isolator 2:

Rev’It Seeflex & Alpinestars Nucleon Flex Pro & D3O :

Readings:

• advrider.com: CE2 Replacement Armor Database / Comparison