This is a rear box/top case made by Motoboy BB (MOTOBOY-BB). It has a capacity of 47L and can store two full-face helmets. It comes with a backrest and upper rack, combining load capacity and comfort. ■Product Overview ・Model Number: BB47ADV-XT ・Color: Black ・Capacity: 47 liters (can store 2 full-face helmets) ・Included: Dedicated base plate, complete set of mounting hardware, 2 keys ・Features: - Backrest for comfortable tandem riding - Upper rack for increased load capacity - One-push opening and one-touch removal - Waterproof specification ■Size (Actual Measurement) Roughly measured the outer plastic parts: Width: Approximately 55cm x Depth: Approximately 40cm x Height: Approximately 30cm ※ Excluding metal parts. There may be some errors due to amateur measurement. It is close to the manufacturer's official value (approx. 58 x 44 x 32cm), so it is definitely the 47L model. ■Condition Used for about six months. There are minor scratches and scuffs from normal use, but there is no noticeable damage and it is generally in good condition. Everything in the images is included. Please refrain from purchasing if you are concerned about minor details as this is a used item. ■Reference Price New price: Around 19,000 - 22,000 yen ■Shipping Will be securely packed with bubble wrap and cardboard, and shipped via Mercari delivery (large size). Instant purchase OK! The price includes shipping. If you are willing to pay for shipping, we can offer a further discount. Thank you for viewing.