NSG"s GROM Pogo Stick. Springing into the next generation of fun we are pleased to introduce our line of pogo sticks. We didn"t just develop another pogo that mirrors days gone by. NSG"s GROM & Flight are made from hydro-formed steel barrel for durability and longevity. Squeaks and creaks traditionally have been synonymous with pogo stick springs. We"ve developed a new Low Friction Spring (LFS) which offers a smoother ride, less rebound resistance and more bounce. Add our rubber grips, replaceable tip, steel foot plates and the GROM & Flight are bound for hours of fun.