These are the Somasix refrigerator magnets. I received this product at a heavily discounted price in exchange for my honest and unbiased opinion. They are brightly colored and a nice size at 1.75″. The magnets pretty light due to being plastic and only having a small magnet on the back. The magnet is strong enough to keep it on the refrigerator, but weak enough that you don’t have to pry it off. The set comes with 62 magnets – one of each letter in both lower and upper case as well as the numbers 0 through 9. My girls enjoy playing with them both on and off of the refrigerator. My only concerns are they seem like they would break if accidentally stepped on (which is probably true for most alphabet magnets) and the back is not enclosed so if the magnets were to somehow come out they would be a swallowing hazard. I would definitely follow the ages 3+ guideline. Otherwise, they work well and are great for helping children with letter recognition and distinguishing between upper and lower case letters.