Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Purchased for 12 Year Old Sprinter - Too Small

I purchased these for my 12 year old Son who needed a descent set of adjustable blocks for practice and meets. For $50.00 these seemed to be a good set for his age. However, the blocks were to small for him, the angles were NOT adjustable and they were unstable. I ended up returning these and purchased the Champion Sports Olympic Style Starting Block which are well worth the extra money and will certainly last through High School.