The Grid is an unusual design... maybe more unusual than functional for a footbag. It's got 60 panels with 20 triangular pouches held together with three well-placed stitches. Each little pouch consists of three panels sewn together and filled with a small amount of plastic granulate.
This is a bag that stalls before it even lands; it's pretty much always in a state of collapse. So it's far from a great kicking footbag, though it makes a great Christmas tree ornament!
@hanedane or 
@geke and depict footbags designed@hanedane