- Durable and weather-ready: thickened nylon fabric provides wear resistance and heat resistance; includes a rain cover to withstand all kinds of weather and keep belongings safe and secure. - Generous, adaptable capacity: 60 litres; weight 0.8 kg; expandable to store more travel essentials; elastic straps on the front fix spare clothes for quick access; inner mesh pockets organize small items; suitable for long distance outdoor trips or daily commuting. - SUPP: easily folds into 1 backpack (top pocket) and 2 hand carry pockets (side pockets); convenient to install on a bicycle frame with fixed hooks and minimal shaking; designed with practical details to meet outdoor needs. - Safe and ergonomic design: curved side compartments prevent rubbing against your feet while riding; each compartment retains its shape with integrated support; wide reflective straps on both sides for visibility in low light; tail light hanger allows mounting a rear light to improve night visibility.