1. Aircraft Grade Aluminum Alloy The motorcycle top case is made of aircraft-grade 1.5mm thick aluminum alloy, providing excellent strength, rigidity and stability. It is impact-resistant, water and dustproof and offers passengers a mounting base and 2 soft cushion backrests. 2. Spacious storage space: with external dimensions of approx. 42 x 33 x 33 cm, the 45 litre motorcycle top case offers space for a full-face helmet, raincoat, gloves and small maintenance tools. The flat body ensures maximum load-bearing capacity. 3. RUST RESISTANT The perfect automatic welds on the 1.5mm thick 5052 aluminum alloy plate ensure durability. Thanks to the special sealing system, they are completely dust and waterproof. 4. The box's reinforced design features durable stainless steel clasps. It also features 2 integrated handles with 4 sturdy attachment points on the lid and an internal attachment device for additional luggage nets. 5. Diamond shaped padding made of soft faux leather - The soft leather inner lining is designed to absorb vibration while driving. Thanks to the quick release system, the top case can be easily connected to the holder. 6. Removable and washable inner liner: the inner lining of the motorcycle boot is removable and washable for practical reasons. The reflective tape design ensures safer driving at night. The handle design makes it easy to remove or place anywhere. Specification: Item type: rear box. Colour: black. Surface treatment: electrostatic spraying. Material: 5052 aluminium alloy. Thickness: 1.5 mm. Top case capacity: 45 litres. Size: approx. 42x33x33cm / 16,5x13x13in Configuration: 1. Inner lining: diamond faux leather (removable) 2.