1. RGM Report: Riding Gear Market - Growth, Trends, COVID19 Impact, and Forecast (2021-2026). https://www.mordorintelligence.com/industry-reports/ridinggear-market
2. MAM Report. Motorcycle Apparel Market: Information by Product Type (Helmets, Jackets, Gloves, Shoes, Pants, Base Layers and others), End Use (On-Road Motorcycle Apparel and Off-Road Motorcycle Apparel), Distribution Channel (Store-Based and Non-Store-Based) and Region (North America, Europe, Asia-Pacific and Rest of the World) - Forecast till 2027. https://www.marketresearchfuture.com/reports/motorcycleapparel-market-7990
3. MRGM Report. Motorbike Riding Gear Market Size, Share & Trends Analysis Report By Product (Protective Gear, Clothing), By Distribution Channel (Online, Offline), And Segment Forecasts, 2019-2025. https://www.grandviewresearch.com/industryanalysis/motorbike-riding-gear-market
4. Council Directive 89/686/EEC of 21 December 1989 on the approximation of the laws of the Member States relating to personal protective equipment, p.18.
5. EN 13595-1:2002: Protective clothing for professional motorcycle riders. Jackets, trousers and one piece or divided suits. General requirements.