1. Outlander Packable Handy Lightweight Travel Hiking Backpack Daypack, Black (Click Link to Check Price on Amazon)
Editor's Rating : 9.2 out of 10
COMPACT. Folds into zippered inner pocket to fit anywhere. Unfolds from pocket to backpack. Must have on every trip.MULTI COMPARTMENTS. Features a classic shape with several pockets for storage and organization. This backpack has a roomy main compartment, two front zipper pockets to hold small accessories, one internal security zippered pocket for valuable items and two side pockets for water bottle or umbrella.

2. Venture Pal Lightweight Packable Durable Travel Hiking Backpack Daypack (Royal Blue) (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
DURABLE. This Venture Pal Backpack is made with high quality tear and water resistant material, provides extra strength and long-lasting performance with the lightest weight possible. The extra strength provided by the double-layer bottom piece makes it very convenient to carry more load on your journeys. Heavy duty two-way SBS metal zippers across the backpack are convenient to operation on whichever side you prefer. Longevity is further enhanced by bar-tacks at major stress points.COMFORTABLE. Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. The length of the shoulder straps is adjustable. The chest strap with a whistle buckle help you lock your backpack in place securely.

3. ZOMAKE Waterproof Ultra Lightweight Packable Backpack Hiking Daypack,Small Backpack Handy Foldable Camping Outdoor Backpack Little Bag (Click Link to Check Price on Amazon)
Editor's Rating : 9.3 out of 10
MULTIPURPOSE - Ultra-light. Ultra-durable. Ultra-awesome. The backpack is perfect for day-to-day use or day trips, vacation, travel, day hikes, school, camping and shopping, and great gift for everyone.CAPACITY - 20L storage space, keep things organized.

4. Outlander Large Packable Handy Lightweight Travel Backpack Daypack, Purple (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
NO FLAPS WITH THE ZIPPER, never struggle with zipping the compartments again! Get Outlander backpacks, don't worry about zippers that catch onto flaps.DURABLE. This Outlander Backpack is made from highly rip and water resistant nylon fabric that provides strength and long-lasting performance with minimal weight. Stress points are reinforced with bar tacking for increased longevity. Durable 2-way Abrasion Resistant SBS Metal Zipper across the backpack.

5. Lightweight Packable Backpack | Water Resistant Foldable Durable Hiking Travel Daypack For Men & Women | Best Camping, Outdoor, Cycling, School, Plane Carry On, Ultralight & Handy Bag 6.5Oz (Click Link to Check Price on Amazon)
Editor's Rating : 9 out of 10
A FAITHFUL TRAVEL ORGANIZER: 3 zippered compartments ,1 main pocket to place bulkier items, 1 outer smaller pocket, 1 inner zippered pocket which doubles and 2 large side mesh pockets.HEY HEAVY BACKPACK! LEAVE THAT BACK ALONE: This 18*12*5¡± handy backpack is ultra lightweight when empty and helps you avoid extra weight when full. Roomy (20 Liter) and lightweight (6.5 oz.)