The bike protections complement our clothing. They are truly necessary, more than just simple accessories and whose use will avoid some upsets, they are the armour of the two wheeled knights. Brands such as Dainese, Alpinestars or Held, have been innovating this segment for years, with more and more sophisticated materials and techniques developed on the track for use on the road.
The back protectors are perhaps the most well known and popular protection. Their creation in competition already indicates their importance as a protection element, by safeguarding our spinal column in the event of a fall on the bike. Riders like Barry Sheene started to wear them, even when they were still of homemade design, but the need wasn't really seen until Wayne Rainey's fall at Misano.
Complementing the protection on the trunk, we have the kidney belts for bikes. Behind this unglamorous name we have a practical protection that embraces the lower part of the thorax, ideal for bike trips around town, as their reduced weight and size make them more comfortable than back protectors.
Some shoulder guards are always useful. The area of the shoulder and scapulas is delicate. If your jacket has no reinforcement in this part, or even if the ones it has are worn, it's always good to have some to hand.
If you use textile pants, maybe you'd be interested in some inner knee guards. Inner as they go inside the pants as the exterior ones are sliders for your 1 piece suit .