Top 12 Best 21 Inch International Carry On Luggage - (2026 Updated)

In this day and age, there are a number of ways to find the best products. We can find what we're looking for with a few simple clicks. But with so many products out there, how do you know which ones are worth your time and money? Here are a few tips:

Shell Types

There are three types of shells: hard, hybrid, and soft.

Hardshells are the most durable and often offer the highest level of security. They're also the heaviest and can be difficult to pack efficiently.

Hybrid shells combine some of the benefits of both hardshells and softshells, such as durability and rain resistance, but they usually aren't as heavy or bulky as a hardshell bag.

Softshell bags are lightweight and perfect for carry-on travel since they don't add much overall weight to your luggage. However, they're not as durable as hardshells and can be less water resistant.

Types of Locks

Different types of luggage are better suited for different activities or situations, so it can be confusing which type to choose.

Cable locks are one of the most common types of locks used for luggage. They're easy to use, and can easily be opened with just a cable. However, they're not as secure as other types of locks, and can be broken if brute force is used. Combination locks are a bit more complicated than cable locks, but also offer greater security. These locks require two separate pieces to be put together in order to unlock them - making them harder to break and less likely to be stolen.

Key locks are the most secure type of luggage lock available, and should only be used on high-value items. These locks require a key to open them, making them difficult (but not impossible) to steal. Some key lock systems also include a digital lock that makes it hard for thieves to bypass without the correct key.

Padlocks are the weakest type of lock available, and should only be used on small items that don't need much security. These locks can easily be cut open with a sharp tool, so keep this in mind if you're planning on travelling with valuable belongings.

Explore further:

• Best Soft Carry On Luggage Shoulder Straps - (Updated)
• Top Best 21 Inch International Carry On Luggage to buy
• Best Hydration Waist Pack For Hiking - Highly Recommened