A stylish, durable, and weather-resistant option for commuting and everyday use, the Osprey Transporter Zip Top Pack provides a comfortable fit and incorporates several convenient modern organizational features. The pack has a mesh-covered ridged foam backpanel to provide comfortable, breathable support. The sternum strap features a safety whistle and adjusts to let you dial in the fit. You can remove the webbing hip belt if you want to save weight or streamline the pack. The main compartment is accessed through a bucket-style zip top closure which opens wide for easy access to the main compartment. Inside, organizational options include a laptop sleeve suitable for up to 15' screens, a key clip, and a sleeve sized for magazines or documents. On the exterior of the pack, a front panel vertical zip pocket gives you easy access to small items. There are also two inset dual water bottle pockets with external zip access. The nylon fabrics are coated with polyurethane to deliver reliable protection from the elements and the challenges of bike commutes, metro rides, and repeated travel. A blinker light attachment point lets you add a light for safety when biking in low light conditions (light not included). The Osprey Transporter Zip Top Pack is available in your choice of colors.