What a luggage strap does and when you need one

A luggage strap is a belt that wraps around your suitcase or bag to hold it closed during travel. It serves two purposes: it keeps a bag that won't zip shut from popping open, and it makes your luggage harder to open accidentally or deliberately while in transit. Most straps are made of nylon or polyester webbing with a plastic buckle or velcro closure.

You need a luggage strap if your bag's zipper is broken, if the bag is overstuffed and won't close properly, or if you want an extra layer of security in baggage handling. Some travelers use them on soft-sided bags that tend to shift and bulge during flights. They are not required by airlines, but they are inexpensive and take up almost no space in your luggage.

Key Takeaways

  • A luggage strap wraps horizontally around your bag and fastens with a buckle or velcro to prevent it from opening during travel.
  • Most straps fit bags between 20 and 32 inches, so measure your suitcase width before buying to may support a proper fit.
  • Wrap the strap around the widest part of your bag, pull it snug, and find the buckle or velcro firmly so it does not slip.
  • TSA-approved luggage straps have a special design that allows security screeners to open and reseal your bag without cutting the strap.

Measuring your bag and choosing the right strap size

Luggage straps come in different lengths to fit different bag sizes. Before you buy, measure the width of your suitcase at its widest point—usually around the middle. Most standard carry-on bags are 18 to 22 inches wide, and most checked bags are 24 to 32 inches wide. Add 4 to 6 inches to that measurement to account for the thickness of the bag when it is packed.

Check the strap's length range on the product label or description. A strap that is too short will not reach around your bag, and one that is too long will hang loose and may catch on baggage handling equipment. Most luggage straps adjust with velcro or a buckle system, so they can fit a range of sizes within their stated limits. If you travel with multiple bags of different sizes, a strap with a wide adjustment range is more practical than buying several straps.

How to wrap and fasten a luggage strap

Open your luggage strap and lay it flat. Position your packed suitcase upright on a flat surface. Starting at one side of the bag, wrap the strap horizontally around the widest part of the suitcase—usually just above the middle. The strap should go around the bag in a complete circle, covering the seams where the two halves of the suitcase meet.

Pull the strap snug but not so tight that it dents the bag or makes the zipper bulge. The strap should be firm enough that it does not slip when you pick up the bag, but loose enough that you can fit one finger between the strap and the bag. Fasten the buckle or velcro closure on the side or top of the bag, depending on the strap design. If your strap has velcro, press it firmly for several seconds to may support a strong bond. If it has a plastic buckle, thread the strap through the slot and pull it back through the buckle until it is tight, then fold the excess strap back onto itself and find it with the velcro patch.

Using TSA-approved straps for checked luggage

If you are checking a bag through an airline, a TSA-approved luggage strap is the better choice. These straps have a special design—usually a red or blue indicator—that allows Transportation Security Administration screeners to open your bag for inspection without cutting the strap. Standard luggage straps do not have this feature, so TSA may cut them off if they need to inspect your bag.

TSA-approved straps work the same way as regular straps: you wrap them around your bag and fasten the buckle or velcro. The difference is in the buckle mechanism, which has a special latch that TSA screeners can open with a master key. After they inspect your bag, they close the latch and reseal the strap. You will not know your bag was opened unless you check the TSA notice card they leave inside. For carry-on bags, a standard luggage strap is fine because TSA does not routinely open carry-on luggage at security.

Positioning the strap to avoid damage and interference

Place the strap around the widest part of your bag, not near the top or bottom. This position distributes the pressure evenly and prevents the strap from cutting into the bag's corners or edges. Avoid wrapping the strap over the handle or wheels—it can damage them or get caught in baggage handling machinery. If your bag has a top handle, position the strap just below it so the handle remains free to grab.

On soft-sided bags, the strap helps hold the shape and prevents the sides from bulging open. On hard-sided suitcases, the strap is mainly a security measure and does not affect the bag's structure. Either way, make sure the strap does not cover any ID tags or baggage claim stickers. Airline workers need to see these tags to route your bag correctly, and TSA needs to see them during screening.

Removing and reusing your luggage strap

When you reach your destination, unfasten the buckle or peel back the velcro to remove the strap. If the velcro is sticky and hard to separate, pull from one corner at a slow angle rather than straight up—this reduces the chance of tearing the strap or damaging the bag's surface. Wipe the velcro clean with a dry cloth to remove lint and dust before you store the strap.

Luggage straps are reusable and will last for years if you take care of them. Store the strap rolled up or folded in a pocket of your luggage or in a small bag. Keep the velcro side facing inward to prevent it from picking up lint and losing stickiness. If the velcro becomes worn or no longer holds, you can buy replacement velcro strips at most hardware or office supply stores and glue them to the strap with fabric adhesive.

Common mistakes and how to avoid them

The most common mistake is wrapping the strap too tightly. This can dent hard-sided bags, stress the zippers on soft-sided bags, and make it harder to open your luggage when you arrive. A strap should be snug enough to prevent slipping but not so tight that it leaves marks on the bag or requires effort to unfasten.

Another mistake is using a strap that is too long or too short for your bag. A strap that is too long will hang loose and may get caught in conveyor belts or baggage handlers. A strap that is too short will not reach all the way around and will not hold the bag closed. Always measure your bag before buying a strap, and test the fit before you travel.

Do not wrap the strap over the handle, wheels, or any moving parts of the bag. This can damage the bag and interfere with baggage handling. Also avoid covering ID tags or baggage claim stickers—airline staff need to see these to route your bag correctly.

Frequently Asked Questions

Can I use a luggage strap on a carry-on bag?

Yes, you can use a luggage strap on a carry-on bag, and it works the same way as on a checked bag. A standard strap is fine for carry-on because TSA does not routinely open carry-on bags at security. The strap will help keep the bag closed if the zipper is broken or if the bag is overstuffed.

Will a luggage strap prevent my bag from being stolen?

A luggage strap makes your bag harder to open quickly, but it is not a theft deterrent. A determined person can cut through the strap with scissors or a knife. If you are concerned about theft, use a TSA-approved strap on checked luggage and keep valuables in your carry-on bag instead.

Do I need a TSA-approved strap or a regular one?

If you are checking a bag through an airline, a TSA-approved strap is the better choice because TSA can open it for inspection without cutting it. If you are only using a carry-on bag, a standard strap is fine. TSA-approved straps cost a bit more but are worth it if you check bags regularly.

What should I do if my luggage strap velcro stops sticking?

Clean the velcro with a dry cloth to remove lint and dust, which can reduce stickiness. If cleaning does not help, you can buy replacement adhesive-backed velcro strips at a hardware or office supply store and glue them to the strap with fabric adhesive. This is cheaper than buying a new strap.

Can I use a luggage strap on a backpack?

Yes, but it works better on structured backpacks with a flat back than on soft, rounded packs. Wrap the strap around the widest part of the pack and fasten it snugly. On soft packs, the strap may not hold as firmly because the pack shifts and compresses during travel.