Made in the USA! Eggcrate foam toppers offer increased air circulation, comfort and support for the body and soften firmer bedding, making it an economical topper for an existing mattress. NOTE: Eggcrate toppers can be used with the peaks facing up or down, according to the user's preference. To minimize the bulk in packaging, we apply a process of vacuum sealing. We vacuum the air from the foam and then pack and seal it air tight. FOAM PACKAGES NEED TO BE OPENED IMMEDIATELY ONCE YOU RECEIVE THE PACKAGE. DO NOT LET THE FOAM SIT UNOPENED FOR MORE THAN 1 WEEK! DO NOT OPEN WITH A BOX CUTTER! USE A BALL POINT PEN OR A PENCIL. START BY MAKING A LITTLE INCISION AND BREAK IT FROM THERE Will last 7 to 10 years. When unpacking, allow at least 2 days for the foam to breathe in order to recover its original size and form.