The Alpinestars Tech Toolpack in grey is a highly durable motorcycle bum bag made from Tarpaulin and 600D Polyester and mesh for ventilation. This is easily accessible (even when wearing gloves) with a zipped compartment on the side and one size fits all with an adjustable kidney belt. This contains several handy compartments and has padding on the back with anti-slip material to ensure it stays put whilst you're riding. Fuss-free and fantastic quality. Also available in other colours.