①Sealed Closure: As the above says, nylon is waterproof, water can’t enter the inside compartment easily. On the opposite way, the interior air or water can’t come out easily through the surface, so maybe it is a good choice to store your food in the winter, but the heat always stays in the insulated condition will make the food destroy in the hot condition.
②Easily to ruined by bleach and acid: Nylon will be destroyed by bleach or acid. Because the bleaching agent can melt nylon delicate fiber quickly. Even when nylon backpack exposing to low-solubility acid condition, which can react to each other, and the nylon construction and original properties will be ruined. Therefore, you should avoid your nylon backpack being exposed to bleach or acid.
③High affinity to dyes: Nylon fabric has a high affinity to dyes, so it can absorb other colors when you put it with other materials, and even some grey will appear in this process. In addition, the absorbed colors can’ be wash easily by regular soap easily, because the absorbed colors will be mixed into the nylon fabric permanently. So, wash nylon backpack separately with other fabrics.