Comparison table.

ASA 2.0 technology: Pump inflation.
OR
ASA 3.0 technology: Always inflated, always ready.
Shoulder and side adjustments.
Recommended for use over jersey.
Neck brace compatible.
Flexible EVA foam structure.
Rigid PVC protective shells.
Air Shock Absorber 2.0 or 3.0
Available from 10-12 years (1m50).
Front: 1621-2 Level 2 | Rear: 1621-3 Level 2
NFC wear tracking technology integrated into ASA 3.0 option.

ASA 2.0 technology: Pump inflation.
OR
ASA 3.0 technology: Always inflated, always ready.
Shoulder and side adjustments.
Can be used under or over the jersey.
Neck brace compatible.
Removable side protectors.
Flexible EVA foam structure.
Rigid PVC protective shells.
Air Shock Absorber 2.0 or 3.0
Available from 6-8 years (1m25).
Front: 1621-2 Level 1 | Rear: 1621-3 Level 1
NFC wear tracking technology integrated into ASA 3.0 option.

ASA 3.0 technology: Always inflated, always ready.
Adjustable shoulder and side straps.
Reinforced shoulder strap openings.
Can be used under or over the jersey.
Neck brace compatible.
Removable side protectors.
Non-Newtonian R2O foam structure.
Rigid PVC protective shells.
Air Shock Absorber 3.0
Available from 6-8 years (1m25).
Front: 1621-2 Level 2 | Rear: 1621-3 Level 2
Integrated NFC ASA 3.0 wear tracking technology.
The vest’s frame is made of non-Newtonian R2O foam, offering enhanced shock absorption on the torso, back and ribs.
R2O foam has a textile finish for unrivalled comfort and optimum strength.