Tangled Metal Stainless Steel Hacky Sack Leather And Chainmail - BLACK (Footbag) Stainless Steel Hacky Sack Leather And Chainmail - BLACK Available in multiple colors. black, white, red, green or purple Also buy three and use them for juggling balls. Another great use is for stress relief. Just squeeze the ball and relax!!! Look for other Chainmail Accessories by Tangled Metal