I read all the reviews here and had already left a review of the 8 piece bag but felt compelled to leave a review here too.
I have to say that the MANUFACTURER states clearly in their product description that these crayons ARE NOT FOR CHILDREN UNDER THREE as they are a choking hazard. All the folks who complained about the size or looking too much like a treat to eat who gave them to babies and toddlers should not blame the product or manufacturer!
When our daughters were 3 years old we started with the 8 color bag of these soy based crayon rocks at the suggestion of a place in town that gives art classes for kids and have been so happy with them. The reason these are so good for our household is that these crayons force the child to hold them with their finger tips, they cannot hold them with a fist, and this is exactly what we have been hoping for to help train our left handed daughter to hold writing utensils (and eating utensils) correctly. When given a regular crayon/colored pencil/marker she holds it with her fist and cannot color well within the lines or draw very fine, but with these crayons she has to use her finger tips and she can be more precise with her coloring and drawing. She notices the difference and wants to learn the correct way to hold things because she is so frustrated that she cannot draw/write/color as well as her right handed twin. They are now 4 years old and at the request of our lefty we have graduated her to the 16 color bag and she is happy to have the new colors (especially the pinks and purples) while still having something that forces her to hold the crayon correctly.
HIGHLY RECOMMENDED product.