Thick and good leather thimble from Clover.
We have it in sizes S, M, and L. It is intended for use on the middle or ring finger when hand sewing. Practical to have, and can feel a little easier to maneuver than other metal or plastic ones since it is softer. When it comes to thimbles, it's a matter of personal preference, and the appropriate type also varies for different uses. These are great for many different types of sewing; we especially recommend them for those who will be doing a lot of embroidery.
I personally switch between them a bit depending on the project.
The nice thing about this one is that it's somewhat flexible and covers the entire fingertip with the same material, so you can push the needle with your fingertip or the side of your finger and don't have to hit a specific area for good effect.
To find your size, you can download and print out the size guide or draw and cut out your own circles to measure, based on the measurements in the template.