In 2001, Ben & Jerry's U.S. completed the transition to "Eco-Pint" packaging, which packaged all pint flavors in environmentally friendly unbleached paperboard Eco-Pint containers, a decision it later reversed. The use of brown-kraft unbleached paperboard had been a critical first step toward a totally biodegradable pint made without added chlorine. Due to what they described as increasing supply, quality, and cost challenges, Ben & Jerry's discontinued their use of the Eco-Pint in 2006, transitioning to a pint container made out of a bleached paperboard that it said was more readily available.