Knee-capper Knee-capper Frog Fluorescent 5 colors Set of 8 This is a hot topic on social media and TV! Their mouths open when you knee-capper them, lol. They chain together. They're very cute. If anyone wants them, please let me know. They've only been displayed, so they're clean. Please refrain from purchasing if you are overly concerned about their condition, as they have been stored at home. They will be wrapped in bubble wrap for shipping. There is no booklet.