Instruct: Classify a review into positive or negative sentiment.
Query: Convenient.

This set includes red, pink, orange, yellow, dk. green, lt. blue, dk. blue, purple, black and brown crayons. The barrels are 6 3/4" and 5 1/4" of that is filled with crayon so they should last a good while. I have just purchased them and so far they seem durable enough; they have already been dropped and they didn't crack. These crayons doesn't have paper to peel back or be sharpened. The colors are not as rich as some of the other Alex brand crayons but fair for children's activities. Another reason I like these is that my dogs don't eat these like the paper wrapped crayons.