Optimal Hard Shell Chest Protector with 3DF AirFit Soft Impact Foam A combination of hard shell protection and soft 3DF AirFit impact foam, the 5.5 Pro Chest Protector provides excellent chest, back and shoulder protection. It has a multi-layer, multi-plate articulating 3D design that offers a great fit and it is very comfortable. The 3DF AirFit impact foam is flexible and conforms comfortably to your body’s shape, yet it absorbs energy when subjected to it during a crash. The hard shell areas are made of made of high density poly ethylene (HDPE) for high impact or stone deflection. The chest protector is neck brace compatible as well as CE tested and certified. Scoring a total of 15 points in the Leatt protection system, the next level of protection is the 5.5 Pro HD Chest Protector that scores 20 points. Total Leatt protection score of 15 points Hard shell and 3DF AirFit ventilated soft impact foam CE tested and certified as impact protection: Chest prEN1621-3 Level 2 Back EN1621-2 Level 2 Shoulder EN1621-1 FFM-French Federation Certified Multi-layer, multi-plate articulating design Mesh base layer Our 3D design ensures a great fit that is very comfortable 45 ventilation slots for maximum cooling FlipFit front and rear function and BraceOn neck brace fitting system allows over and under the shirt fitting with Leatt neck braces Under and over the jersey fitting Weight: 1.700g Unisex Fit: 70 to 90 kg Also available in XXL (90 - 130kg)