Customers praise the educational value and ease of use of this product, noting its effectiveness in teaching letters and sounds. The material is generally considered durable, withstanding heavy wear. However, some customers have expressed concerns about the material, with one review mentioning that certain pieces are too large to fit in the cans and can get stuck, making them difficult to remove without damage. Another reviewer wished the cans were plastic instead of cardboard, though they acknowledged the sturdiness of the existing material.