NEW VERSION CHOICE: The 35-liter foldable backpack for traveling weighs only 0.87lbs and the folded size is only 9.59.5inches, Save your space to fold it into its built-in pouch as a sandwich size. Easily fold the backpack into your suitcase or bag. Easy to carry and store. Designed to easily fold into your suitcase for use at destinations as an ultralight foldable folding backpack for hiking THE STORM IS GOING ON: The water-resistant foldable backpack is made of thickened water-resistant polyester material. Don't be afraid of getting wet with this lightweight daily backpack for hiking even in light rain ALL BACKPACKS ARE NOT CREATED EQUAL: Made of Nylon Material. Heavy-duty SBS metal zippers, smooth and hard to damage, can adapt to long-term use. Mesh shoulder straps are adjustable and breathable .FOLDABLE BACKPACK BRINGS THE WORLD TO YOU WITH A SINGLE COPY: Suitable for men and women. This ultralight backpack is the perfect companion for day trips, vacation, travel, hiking, park, carry-on, airplane, camping and shopping. The foldable nylon backpack will be a great necessity for outdoor sports or leisure activities in or out of town .NOTE: Not suitable for children under 12 years old. Not suitable for carrying heavy items, no cushion for laptop and camera. Clean the stain with warm water, hand wash, and then hang to air dry