Sealed Air offers an environmentally friendly Ethafoam® plank option for customers who want to combine performance with commitment. Ethafoam® MRC (Maximum Recycled Content) is made with a minimum of 100% pre-consumer recycled resin content Ethafoam® HRC (High Recycled Content) is made with a minimum of 65% pre-consumer recycled resin content.Sealed Air offers an environmentally friendly Ethafoam® plank option for customers who want to combine performance with commitment. Ethafoam® MRC (Maximum Recycled Content) is made with a minimum of 100% pre-consumer recycled resin content Ethafoam® HRC (High Recycled Content) is made with a minimum of 65% pre-consumer recycled resin content.