Gregory Arrio 28L Daypack Sage Grey One Size. A lightweight daypack designed to move with your body while providing max airflow and on-the-go access to your longer day hike essentials. Specifications for Gregory Arrio 28L Daypack: Manufacturer: Gregory Size: One Size Gender: Unisex Pack Type: Daypack Pack Volume: 28 liters Fabric/Material: 210D Nylon Ripstop Age Group: Adults Features of Gregory Arrio 28L Daypack A body-hugging fit that supports dynamic movement and optimal comfort on-trail Experience optimized airflow stability and temperature regulation through the progressive mesh and frame supported backpanel The ideal day hiker toolkit that offers a clean modern design with no compromise on performance access or comfort Package Contents: Gregory Arrio 28L Daypack Gregory 157885-A482: Arrio 28L Daypack Sage Grey One Size