What is an essential gear requirement before riding with a passenger?

The requirement for a big enough seat is essential before riding with a passenger because the motorcycle must be able to accommodate both the rider and the passenger safely. A seat that is appropriately sized allows both individuals to maintain comfort and stability while riding. If the seat is too small, it may lead to an unsafe riding position, compromising balance and control of the motorcycle, which in turn can jeopardize the safety of both the rider and the passenger.

Though additional gear like larger helmets or extra gloves can be helpful for comfort or protection, they do not address fundamental safety and stability issues when carrying a passenger. A backrest may enhance comfort but does not fulfill the crucial requirement of ensuring that there is enough space for a passenger. Therefore, having a big enough seat is the central concern when considering the safety and legality of carrying a passenger on a motorcycle.