A first of its kind, the Carboy Bumper is a simple product designed to fill a gap in Homebrewing and winemaking. Made from a special shock absorbing microcellular material that is soft to touch, but when stressed upon impact, it hardens up to absorb the impact. The Carboy Bumper material absorbs up to 90% of impact energy protecting any carboy from impact damage, in accordance to ASTM-F1614-C. Even with careful carboy handling practices, micro fractures develop in your glass carboy every time you place it down on a hard surface. Overtime, these micro fractures weaken the structure of your carboy. The Carboy Bumper is designed to attach to and extend the life of your carboy and prevent breakage that occur from everyday carboy usage. The Carboy Bumper – Protects Your Glass Carboy or Fermenter for Home Brewing Beer, Wine Making, Cider, & Mead (set of 6), Country of origin – United States, Manufacturer name – Home Brew Ohio.