How to Clean and Maintain Your Backpack for Longevity

How Often Should You Wash Your Backpack?

Most people never wash their backpack, and that's why it starts smelling after a few trips. As a baseline:

• Daily-use backpacks (office, college): Wash once every 2 to 3 months
• Travel backpacks (used for trips): Wash after every trip, or every 4 to 6 weeks of active use
• Hiking and trekking backpacks: Wash after every trek, no exceptions
• Spot clean immediately if you spill anything, get caught in rain, or notice stains

If your backpack smells even after airing it out, that is your signal. Don't wait for a schedule.

Preparing Your Backpack for Cleaning

Before you put water anywhere near your bag, do this:

Step 1: Empty Everything

Turn the bag upside down and shake out crumbs, sand, and debris. Check every pocket, including the small zip pockets people forget about. Remove any detachable rain covers, hip belt pouches, or sternum straps.

Step 2: Inspect for Damage

Look for loose threads, torn seams, broken zippers, and worn-out fabric. Cleaning a damaged bag without fixing it first can make tears worse, especially during machine washing. Note down anything that needs repair before you proceed.

Step 3: Spot Clean Stains First

Use a soft brush (an old toothbrush works) and a mix of mild detergent with lukewarm water. Gently scrub visible stains, mud marks, or food spills. Let the spot treatment sit for 10 to 15 minutes before moving to a full wash. This step alone handles 80% of surface-level dirt.

How to Clean Different Types of Backpacks

Not every backpack material cleans the same way. Using the wrong method can damage coatings, warp frames, or shrink fabric.

How to Clean a Nylon Backpack

Nylon is the most common material in travel and everyday backpacks, including the CarryPro Hobo40 V2 and Mojo V2.

1. Fill a tub or basin with lukewarm water (not hot, hot water damages nylon coatings)
2. Add a small amount of mild liquid detergent. No bleach, no fabric softener
3. Submerge the backpack and gently agitate with your hands for 3 to 5 minutes
4. Use a soft brush on stubborn spots
5. Drain the soapy water, refill with clean water, and rinse until no soap remains
6. Hang upside down in shade to air dry. Never put a nylon backpack in a dryer

How to Clean a Canvas Backpack

Canvas absorbs more dirt and moisture than nylon. Hand washing is best.

1. Brush off loose dirt with a dry, stiff brush
2. Use a damp cloth with mild soap to wipe down the exterior
3. For heavy soiling, submerge in cool water with gentle detergent for 10 minutes
4. Rinse thoroughly and reshape while damp
5. Air dry completely before storing. Canvas is prone to mildew if stored damp

How to Clean a Waterproof or Water-Resistant Backpack

Water-resistant backpacks have a DWR (Durable Water Repellent) coating that can be stripped by harsh detergents.

1. Wipe the exterior with a damp cloth only
2. For deeper cleaning, use a tech wash specifically made for waterproof fabrics (Nikwax Tech Wash or similar)
3. Never use regular detergent, it breaks down the waterproof coating
4. Air dry and reapply DWR spray after washing if water stops beading on the surface

Can You Wash a Backpack in a Washing Machine?

You can, but only if the backpack has no internal frame, no padded hip belt with foam inserts, and no waterproof coating. If yours has any of those, hand wash only.

If machine washing:

• Remove all detachable parts
• Place the backpack inside a large pillowcase or laundry bag
• Use cold water, gentle cycle, mild detergent
• Never use a dryer. Air dry only

For CarryPro backpacks, we recommend hand washing to preserve the water-resistant coating and zipper hardware.

Drying and Storing Your Backpack Properly

Improper drying is the number one reason backpacks develop mold and that musty smell that never goes away.

How to Dry a Backpack

• Hang upside down with all zippers open so air circulates inside
• Place in a well-ventilated, shaded area. Direct sunlight fades fabric and degrades coatings
• Stuff the main compartment loosely with newspaper or dry towels to absorb internal moisture faster
• Allow 24 to 48 hours for a full dry before zipping shut or storing

How to Store a Backpack

• Store in a cool, dry place. Not in a damp garage or attic
• Do not compress or fold the backpack into a tight space for long periods. This warps the back panel and shoulder padding
• If storing for more than a month, stuff the bag lightly with old t-shirts or packing paper to maintain its shape
• Leave zippers partially open during storage to prevent zipper teeth from corroding in humid conditions

Maintaining Zippers, Straps, and Buckles

Hardware fails before fabric does. A stuck zipper or a loose buckle can make an otherwise fine backpack unusable.

Zippers

• Run a graphite pencil or a candle along the zipper teeth every few months. This keeps them sliding smoothly
• If a zipper gets stuck, do not force it. Gently wiggle the slider back, remove any caught fabric, then try again
• Clean zipper tracks with a dry toothbrush to remove grit and sand

Straps and Buckles

• Check all strap stitching before every trip. A fraying strap under load can snap during a trek
• Tighten any loose ladder lock buckles by pulling the webbing through firmly
• If a buckle cracks, replace it immediately. Most outdoor gear shops sell universal replacement buckles

When to Replace vs. Repair

• Small tears under 2 cm: patch with fabric repair tape or iron-on patches
• Seam separation: re-stitch or take to a local tailor who works with heavy fabrics
• Broken main zipper or collapsed back panel: time for a new backpack. Repair cost at this point often exceeds the value