When it comes to choosing the best Jiu Jitsu belt for your training, there are a few factors to take into account. Firstly, you need to find a belt that is comfortable and fits well. Belts can be made from a variety of materials, including leather, neoprene, and synthetic materials. It is important to find one that is both durable and comfortable, so you can train without discomfort. 

Secondly, it is important to consider the type of martial art you are practicing. Jiu Jitsu straps varies in thickness depending on the style of Jiu Jitsu being practiced. For example, an American Jiu Jitsu belt is thicker than a Brazilian Jiu Jitsu belt. This is because American Jiu-Jitsu focuses more on ground fighting, while Brazilian Jiu-Jitsu relies more on submissions from the clinch and open guard positions. 

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Thirdly, you should decide what size belt you need. Most belts range in width from 1 inch to 1 1/2 inches and in length from 16 inches to 22 inches. Belt sizing can be difficult if you do not have access to a seamstress or tailor. If this is the case for you, it is best to go with a belt that is half an inch

Finally, The most important factor is the size of your waist. After that, you should look at the type of material the belt is made out of and whether it has any reinforcement areas. You should also consider the price and the brand.