The construction of the bag is aluminum and the bag is made of polyester, the inside of the bag is reinforced with thermo material, closing with Velcro. Detachable cables Volume: 60 liters Recommended maximum load: 30 kg Size: 100.5x46x37 cm (height x width x depth) Bag size: 55x32x23 cm Wheel diameter: 21 cm Color: gray with flower motif /p>