According to the backpack usage, some packs might do the waterproofing treatment to meet requirements of users. It can help to resist water or rain and protect your belongings indoors or outdoors. Different fabrics have different strengths in waterproof ratings.

Standard fabrics like nylon, polyester, and canvas can be 

arranged according to their waterproof strength. Nylon is 

the most waterproof of the three fabrics. It would be better 

if coated with PU. Polyester is inferior to nylon, which can 

be attached with PU coating to achieve great waterproofing. 

Canvas is generally not waterproof due to its water-

absorbing properties. Even with waterproof treatment, 

canvas is still inferior to nylon and polyester. 

Here are five methods of waterproofing treatment for the backpack.

Method 1: Spray oil-based waterproofing agent.

Firstly, clean around the pack, and then use an oil-based waterproofing agent to spray directly onto the backpack surface 20 cm away. After that, air dry the sprayed backpack or put it in the oven at 40-50℃.

Method 2: Waterproof treatment of the raw material.

Dilute iHeir-666 to 2% with water and then put the raw material (polyester、nylon, or others) into the mixed liquid. After 2 minutes, airdry the soaked fabric at 110-130℃ and finish the shape at 170℃ in 3 minutes.

Method 3: Use a waterproof bag.

Prepare several waterproof bags to separate the necessities into different categories. This will protect the bags' contents from moisture.

Method 4: Select backpacks with waterproof material.

Patent leather, coated canvas, and genuine leather like EPI are naturally waterproof. The backpacks with these fabrics can still keep dry in the rain. But patent leather quickly leaves scratches and cracks at the low temperature.

Method 5: Use a bag raincoat.

There are also special bag raincoats on the market. Cover it on the backpack to provide extra waterproof protection and keep your whole backpack away from the rain. You can choose one according to the size of your backpack.

In addition to the above waterproof treatments for backpacks, the right backpack cleaning is also crucial. Improper cleaning methods can damage oating and shapes of the backpacks. So, how to clean the backpack properly? Following are the steps for your reference.

STEP ONE

Take out all items from the pack, clean the inside, and remove each part of the backpack.

STEP TWO

Soak the backpack in cold water for 15-30 minutes to soften the stain on the pack. 

Brush the stain lightly with a sponge, focusing on the back panel, shoulder strap, waist strap, and other touch areas. 

Use a soft bristle brush to clean the small gaps. 

For the stubborn stain, use neutral detergent (PH of 6-7).

STEP THREE

Rinse repeatedly with clear water and rinse off the detergent.

STEP FOUR

Airdry the backpack in a cool and ventilated place out of direct sunlight.

The waterproof function of the backpack allows us to go out without embarrassment and keeps our belongings operating normally. After using the backpacks, maintenance to waterproof them is also considered.