RunAbout Pack-Away Daypack 18L - LP37443-PWW | Lowepro US
Amazon.com : ZOMAKE Lightweight Packable Backpack 40L - Light Foldable Hiking Backpacks Water Resistant Large Folding Daypack for Travel(Aqua Blue) : Sports & Outdoors
Amazon.com : bago Lightweight Small Hiking Backpack for Women and Men - 25L Travel Day Pack - Foldable Hiking Daypack Ultralight for Camping Outdoor Sports - Day Bag Packable Backpack for Travel (
Best lightweight packable backpacks – Snarky Nomad