Roland Big Boy bicycle trailer The Roland Big Boy is a sturdy bicycle trailer made of steel and plastic, a robust combination that ensures a sturdy bicycle trailer. The loading box of the trailer is removable, so you can also use just the base of the box to load things. The total width of the trailer including wheels and carrying handles is 64 centimeters. Specifications: Big Boy A with seat post attachment Net weight: approx. 12 kg External dimensions: 155 x 67 x 85 cm Dimensions box: Approx. 78 x 48 x 32 cm (outside) Dimensions box: Approx. 72 x 42 x 31 cm (inside) Material box: plastic Capacity box: 90 liters Max. load capacity: 90 kg Color: black Wheel size: 16 inch