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 Flank protection FIM-Federation International Certified FFM-French Federation Certified Multi-layer, multi-plate articulating design Mesh base layer Adjustable flank panels add side impact protection Our 3D design ensures a great fit that is very comfortable 53 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 New and adjustable over-the-shoulder straps ensure a great fit Weight: from 2.000g (4.4lbs) Unisex Fit: 70 to 90 kg (154-198lbs) Also available in #XXL 90 – 130kg (198-287lbs)

Their recommended height for this one is 160-184 cm (about 5'2" to 6')

This is an older model and I don't believe they used sizes then like they do now.