BIZZTOK on Instagram: "THE COOLEST PRODUCT EVER 🤯❗❗ #sharktank the founders of ZipString take center stage to introduce what they call the "toy of the future." Dressed in sleek black suits and sunglasses, they perform a series of impressive tricks like "The Swirl" and "The Corkscrew," showing how a simple loop of string can defy gravity and glide through the air at 35 miles per hour while remaining safe to touch. The innovation lies in the device's ability to perfectly follow the user's hand mo