How to Wash a Backpack: Machine, Hand Wash & Drying Guide

A dirty backpack is not just unsightly -- it can harbor bacteria, mold, and odors that get worse over time. The good news: most backpacks made from polyester, nylon, or canvas are machine washable. Leather and hiking packs with internal frames require hand washing instead.

Whether it is a school backpack, gym bag, or travel pack, here is how to get it clean without damaging the fabric or hardware.

Can You Put a Backpack in the Washing Machine?

Yes -- if it is made from polyester, nylon, or canvas. Check the care label inside the bag first. If you see a washing machine symbol with an X through it, hand wash only. According to REI, most standard school and day packs are machine safe.

Do NOT machine wash:

• Leather or suede backpacks
• Packs with internal frames or stays
• Bags with non-removable electronics or speakers
• Anything labeled dry clean only

How to Wash a Backpack in the Washing Machine

1. Empty everything -- Check every pocket and compartment. Shake out crumbs and debris.
2. Pre-treat stains -- Apply a small amount of mild detergent directly to stained areas and let sit for 15 minutes.
3. Remove detachable parts -- Unclip straps, remove waist belts, and take out any removable pads. Wash these separately in a mesh bag.
4. Turn inside out -- This protects the outer fabric and hardware from snagging.
5. Use a mesh laundry bag -- Place the backpack inside a large mesh bag or pillowcase to prevent straps from tangling in the drum.
6. Wash on gentle cycle with cold water -- Use a mild, non-bleach detergent. Avoid fabric softener -- it can coat waterproof coatings.
7. Air dry only -- Hang upside down with all zippers open. Never put a backpack in the dryer -- heat can melt glue, warp plastic, and shrink fabric.

Drying takes 24 to 48 hours depending on thickness. Place near a fan or in a well-ventilated area to speed it up.

How to Hand Wash a Backpack

For leather packs, hiking bags with frames, or delicate materials:

1. Fill a bathtub or large basin with lukewarm water and a tablespoon of mild detergent
2. Submerge the backpack and gently scrub with a soft brush or cloth
3. Pay extra attention to the bottom panel and shoulder strap contact areas
4. Rinse thoroughly with clean water until no soap remains
5. Squeeze out excess water gently -- do not wring
6. Air dry upside down with compartments open

How Often Should You Wash a Backpack?

• School/daily use backpacks: Every 1 to 2 months, or whenever visibly dirty or smelly
• Gym bags: Every 1 to 2 weeks (sweat and moisture accelerate bacteria growth)
• Travel/hiking packs: After every trip or at least once per season

Between washes, spot-clean stains with a damp cloth and mild soap. Empty crumbs regularly and leave zippers open overnight to air out.

Frequently Asked Questions

Can I wash a backpack at a laundromat?
Yes. Use a front-load machine on the gentle cycle -- top-loaders with agitators can damage backpack hardware. A laundromat is ideal if your home machine is too small for a large pack.

Will washing ruin the waterproof coating?
Gentle washing with mild detergent preserves most DWR (durable water repellent) coatings. Avoid bleach and fabric softener, which strip waterproofing. You can reapply DWR spray after washing if needed.

Can I put a backpack in the dryer?
No. Heat damages glue, melts plastic buckles, and can shrink synthetic fabrics. Always air dry.

Sources

• REI -- How to Clean a Backpack
• Whirlpool -- How to Wash a Backpack in 5 Steps