10 Best Backpack Locks 2025 in the United States

The TSA Approved Cable Luggage Locks by Forge offer a durable and flexible solution for securing your belongings during travel. Made from a sturdy alloy material, these locks are designed to withstand significant wear and tear, and they come with a lifetime guarantee. The lock features a re-settable, easy-to-use 3-digit combination mechanism, ensuring that you can set and change your personal code as needed without hassle.

The cable design of the lock is particularly advantageous, allowing it to thread through various zipper sizes and lock holes, thus providing greater flexibility than traditional shackle locks. With dimensions of 6.1 x 3.7 x 0.1 inches and a weight of 4.8 ounces, the locks are lightweight and compact, making them convenient to carry. An added security feature ensures that TSA agents must relock the lock after inspection, giving peace of mind that your luggage will not be left unsecured.

These locks might be overkill for casual travelers and may be more suited to frequent flyers who need reliable, heavy-duty security. Additionally, while the design is robust, the cable's thinness could potentially be a drawback in extremely high-risk theft areas. These locks are ideal for travelers who prioritize security and durability, and who need a lock that can adapt to various baggage requirements.

The Master Lock Black Combination Padlock is designed primarily for securing luggage, backpacks, and cabinets, making it a good choice for travelers and students. It features a customizable three-digit combination, allowing for keyless convenience, which is easy to set up and use. The lock is made from solid metal with a black finish and has a steel shackle that offers decent cut resistance, enhancing its security.

At just 2.82 ounces and with dimensions of 0.56 x 1.2 x 2.86 inches, the padlock is compact and lightweight, ideal for portability and use on the go. The shackle thickness is 3/16 inches, which is adequate for basic security needs but might not withstand heavier tampering attempts. One of the notable strengths is the ability to reset the combination, providing flexibility and personalization.

However, it is important to note that this lock is not TSA-approved, which might be a drawback for frequent air travelers who need to comply with airport security regulations. Additionally, while the lock offers cut resistance, it may not be suitable for high-security situations where more robust protection is required. This padlock is a convenient and effective option for everyday use on backpacks and luggage, but it may not be suitable for high-security needs or TSA-compliant travel.

The Puroma 4 Pack TSA Approved Luggage Locks feature a 4-digit combination code, offering enhanced security with 10,000 unique possibilities, making it more secure than common 3-digit locks. The white numerals on the black dials ensure easy readability in various lighting conditions. These locks are crafted from premium zinc alloy and sturdy steel, designed to resist sawing, hammering, and prying, offering significant durability and scratch protection for daily use and travel.

Additionally, these locks are equipped with a flexible cable, making them versatile for securing not just backpacks, but also zippers, equipment cases, and more. Their TSA approval means that TSA agents can unlock and relock your luggage using a special key, preventing damage during inspections and maintaining the security of your belongings during travel. The lightweight and user-friendly design, with an unlock button, make these locks convenient to carry and use, whether you are on a business trip, traveling, hiking, or at the gym.

However, at 12 ounces for the package of four, they might add a slight weight to your luggage. These locks are also weather, rust, and corrosion-resistant, adding to their longevity and reliability. The Puroma TSA locks are a great choice for anyone needing secure, durable, and versatile locks for various travel and daily use scenarios.