Aer City Sling 2 X-Pac in Black. Used a couple times. Excellent condition. The City Sling 2 X-Pac is the essential, everyday sling bag designed for exploring the city. It features multiple pockets for your everyday essentials, premium materials and trims for enhanced durability and a stowaway sling strap that transforms the bag into a storage kit. Dimensions Length: 13" (33 cm) Width: 4.75" (12 cm) Depth: 3.5" (9 cm) Volume 2.5 L Weight 0.9 lbs