Product title helps customer understand your product with most important information and rank higher in search results page. We will see how to structure a title so that it will be easy to read for a human but also for the Amazon A9 algorithm.
It has to starts with the brand title. This give credibility and distinctiveness in the search results page. A customer could have heard your brand name from other channels (word of mouth, facebook or instagram) and specifically looking for it.
The Amazon's Choice keywords is the customer search term used the most to purchased the product. It's gives a solid information about what were looking for your customer and you want to add in the product title.
If you any variation add it at the end of title in brackets. This helps the Amazon search algorithm to pick up the right ASIN to match the customer search query. For example, if a customer search for "purple mat" it most likely to shows the purple variation the term "purple" it's present in both title and variation name. This also improve the customer experience making more clear what variations is it buying.
To allow greater readability, the title should have a maximum of 150 characters even though you could have a maximum of 200.
You should always capitalize every single word, except for connectives, and there should always be a space between dividing characters (,). This will allow the shopper to have everything clear, without the need of reading it multiple times.
To create a good product title, you must follow other title requirements that can be found on this page.