Sunoco Racing 5 gallon jug is made from chemical resistant high-density polyethylene. This high strength industrial design can withstand the roughest treatment. The Cap is unbreakable and has an integrated rubber o-ring seal. The Tri-Ribbed bottom is for strength and also doubles as a multi-grip pouring handle. Dual Body Bands prevents body swelling, keeping fluid level markings accurate. Fluid level markings are in US Gallons and Liters.