A saddle-type or straddle-type vehicle comprising: a head pipe; a vehicle body frame extending rearward from the head pipe; a seat for seating a rider, the seat being supported by the vehicle body frame at a position to the rear of the head pipe; an accommodation box located to the rear of the head pipe and to the front of the seat, the accommodation box comprising a first opening formed in at least one of a left portion and a right portion thereof; and an openable/closable first side cover located outwardly of the first opening of the accommodation box in a vehicle width direction; wherein the first side cover includes an opening overlapping the first opening of the accommodation box as seen in a vehicle side view when the first side cover is closed, wherein: the accommodation box includes a second opening formed in the left portion or the right portion thereof that is opposite to the portion in which the first opening is formed; the saddle-type vehicle further includes a second side cover located outwardly in the vehicle width direction to the second opening of the accommodation box; and the second side cover includes an opening overlapping the second opening of the accommodation box as seen in the vehicle side view when the second side cover is closed, characterized in that the opening of the first side cover, the first opening of the accommodation box, the second opening of the accommodation box and the opening of the second side cover overlap each other as seen in the vehicle side view, so that a hole running through the first side cover, the accommodation box and the second side cover is formed in the vehicle. a head pipe; a vehicle body frame extending rearward from the head pipe; a seat for seating a rider, the seat being supported by the vehicle body frame at a position to the rear of the head pipe; an accommodation box located to the rear of the head pipe and to the front of the seat, the accommodation box comprising a first opening formed in at least one of a left portion and a right portion thereof; and an openable/closable first side cover located outwardly of the first opening of the accommodation box in a vehicle width direction; wherein the first side cover includes an opening overlapping the first opening of the accommodation box as seen in a vehicle side view when the first side cover is closed, wherein: the accommodation box includes a second opening formed in the left portion or the right portion thereof that is opposite to the portion in which the first opening is formed; the saddle-type vehicle further includes a second side cover located outwardly in the vehicle width direction to the second opening of the accommodation box; and the second side cover includes an opening overlapping the second opening of the accommodation box as seen in the vehicle side view when the second side cover is closed, characterized in that the opening of the first side cover, the first opening of the accommodation box, the second opening of the accommodation box and the opening of the second side cover overlap each other as seen in the vehicle side view, so that a hole running through the first side cover, the accommodation box and the second side cover is formed in the vehicle. the accommodation box includes a second opening formed in the left portion or the right portion thereof that is opposite to the portion in which the first opening is formed; the saddle-type vehicle further includes a second side cover located outwardly in the vehicle width direction to the second opening of the accommodation box; and the second side cover includes an opening overlapping the second opening of the accommodation box as seen in the vehicle side view when the second side cover is closed, characterized in that the opening of the first side cover, the first opening of the accommodation box, the second opening of the accommodation box and the opening of the second side cover overlap each other as seen in the vehicle side view, so that a hole running through the first side cover, the accommodation box and the second side cover is formed in the vehicle.