Alpinestars Nucleon KR-2i Back Protector Insert

The Nucleon KR-2i soft back protector is quick and convenient to insert and fit unobtrusively within a rider's jacket or suit for the ultimate in comfort and safety protection.

Features

• CE Certified Level 2 (EN1621-2:2014)
• Lightweight, flexible PU injected impact foam
• Contoured for anatomical and adaptive fit
• Perforated for breathability and comfort
• Channel ventilation system for optimized airflow 

Sizing: Waist to Shoulder & Height

• Small: 38 - 43 cm / 144 - 163 cm
• Medium: 43 - 48 cm / 163 - 182 cm
• Large: 48 - 51 cm / 182 - 194 cm

Dimensions

• Small: Width: 23cm / Length: 38cm
• Medium: Width: 25cm / Length: 42.5cm
• Large: Width: 26.5cm / Length: 45.5cm

Note: Size M is recommended for Men's jackets size 50 and smaller and XS-M. Size L is recommended for Men's jackets size 52 and larger and L-4XL.