Alpinestars Bionic rib support, recently updated, these rib protectors provide support and protection for kart racers and does so comfortably. It's a lightweight, slimline product with a dual-layer, shock absorbing construction with soft poly lining.
A fibreglass core is designed to disperse energy away from any impact point and the advanced abrasion resistant poly fabric outer layer offers protection. Internally there's a laminated dual density padding, with 3mm high density padding in driver body contact areas, to provide high levels of comfort, with a 4mm EVA foam offering effective impact protection and reduced vibration.
The padding at the rear is perforated for additional support and airflow and the fully adjustable shoulder and elasticated front straps ensure a precise and comfortable fit, with the Velcro adjutment straps allowing fine adjustments for a perfect fit. Available in three sizes from children and adults.
Chest circumference dimensions
| Protector Size | Size in CM | Size in Inches |
| Youth | 56-82 | 22-32 |
| Adult S-L | 81-104 | 32-41 |
| Adult XL-XXXL | 105-124 | 42-49 |
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