DynaPack easily holds tools, inner tubes and other essentials with room to spare for a light rain jacket, small picnic lunch or anything else you might need. A lightweight aluminum exo-frame holds the DynaPack securely while a quick release seat post mount makes installation and removal a breeze. Capacity: 4 L / 244 ci Size (L x W x H): 39 x 17 x 18cm, 15.3” x 6.7” x 7.1” (bag w/ frame) Weight: 500 g / 1.1lbs (bag w/ frame)