Our foams are made in the USA! High density foam has a compression rate of 44 lbs. This means for every 44 lbs on a general idea, your foam will compress by 25%. High density foam is designed for heavy traffic and high use applications. 100% recovery rate durability : durable, high density foam suitable for long-term use. Medium density foam has a compression rate of 36 lbs. This means for every 36 lbs. on a general idea, your foam will compress by 25%. Medium density foam is designed for that sink in effect for those who love to fall into a nice soft cushion. 100% Recovery rate fire retardant durability : durable, medium density foam suitable for long-term use. Regular density foam has a compression rate of 33 lbs. This means for every 33 lbs. on a general idea, your foam will compress by 25%. Regular Density Foam is suitable for light use and decorative applications