Ecoo via Amazon offers Prime members the Ecoopro 20-Litre Durable Lightweight Packable Travel Hiking Backpack Daypack in Blue for $7.99 with free shipping. That's $2 under last April's mention and the lowest price we've seen. (It's the best deal today by $2.) It measures approximately 16" x 12" x 7" and stuffs into its own pocket for storage.