Speed Stacks StackPack comes with twelve stacking cups and a storage bag, a mat and timer, and an instruction DVD which teaches kids specific moves and strategies. I like Speed Stacks because they are fun, competitive, and promote hand-eye-coordination. My son has had fun playing with his Speed Stacks. The instruction video is wonderful. My son has improved his stacking skills like how to hold the cups and which hand to use. He actally improved his speed too after following the tips given on the video. There are great examples of kids competing and the instructors use positive words to encourage kids to work hard. I have had fun trying Speed Stacks out too! It has fed my competitive side. I like this product because it teaches kids to work towards a goal. It also teaches them that the more you practice a skill, the better you will be!