Weightlifting belts come with different locking mechanisms, each with its own advantages:

Lever Belts: These provide a secure and consistent fit. Once adjusted, you can lock and unlock the belt quickly using the lever. They're great for heavy lifts but less adjustable on the fly. Lever belts are generally found on leather belts that offer a stiffer belt. 

Prong Belts: Similar to a traditional belt, they use one or two prongs to fasten. They're durable and allow for minor adjustments in tightness. On some belts the prong holes can stretch over time. They also take more time to put on than velcro or other belt locking mechanisms. 

Velcro Belts: These offer quick adjustments and are ideal for workouts involving varied movements, like CrossFit. Velcro belts are generally found on nylon belts. Some locking mechanisms offer just a simple roller that can be used to remove and tighten the belt quickly during your workout.

The Turtle Strength Lifting Belt features a knurled buckle locking system provides security, keeping the belt firmly in place even during your heaviest lifts. Unlike plastic locks, this metal design won’t flex or fail under pressure. Alternatively, you can use the smooth roller, which allows for quick and seamless transitions between exercises, so you can focus on your training.