Using these NeeDoh Squeeze Hearts is super easy. Just pick one up and give it a firm squeeze whenever you're feeling stressed or just want to have some fun. They're great for all ages 3 and up. When it comes to dispatch, remember that the styles are chosen at random. If you have a specific style in mind, add a note to your order and we'll try to fulfill it if available. Each heart is sold separately. To keep them in good condition, just keep them away from sharp objects and extreme temperatures. If you want to be sure to get the style you want, head to your local Toyworld store.