A harness and braces are important pieces of training equipment that help you to perform your exercises more efficiently and safely.
The straps help support the back and abdomen during strength training. They help prevent back injuries and improve mobility. They are particularly useful for lifting heavy weights.
Wrist supports protect the wrists from strain during strength training. They help prevent wrist injuries and improve mobility. Wrist supports are particularly useful for lifting weights and pulling movements.
Here are some tips on how to choose them:

Choose a belt that is the right size and supportive.
Choose braces that are comfortable and supportive.

Choosing a safety belt and wrist supports is an important part of an active lifestyle. By choosing the right equipment, you can perform your exercises more efficiently and safely.
I hope these tips will help you in your choice!