poshmark.com
Lightweight Backpack
Dimensions: Unfolded: 18.5x13x7.5 inches, Folded: 8.5x8.5x1.2 inches. The backpack is made from rip and water-resistant nylon fabric. Folds into zippered inner pocket then can unfold from pocket to backpack. Backpack is super lightweight at only 0.7 Pounds, however it can fit 35 Liters. This backpack has a main compartment, two front zipper pockets and two side pockets.
Check out this listing I just added to my Poshmark closet: Lightweight Backpack.