The Dainese Chest L2 Protector features:

• Chest protector in compliance with pre-Standard Pr-EN 1621.3
• Double frontal plate in ergonomic shape
• Inner core in perforated Crash absorb® shock absorbing material

Two sizes (measurements as a guide) - see also the picture titled "Dainese label info" :

• Medium (94-102cm chest; 172-178cm tall)
• Large (102-110cm chest; 178-184cm tall)