‧Made in Malaysia‧ PPS 3600 double-layer "back health chain spring in bag"* luxury precision spring *The number of springs is calculated based on a 6-foot mattress‧ SPACER breathable surrounds help air flow‧TempSmart Brocade Cover‧Extra thick body pad‧Multi-layer New Zealand pure wool, super soft breast pads and other materials‧One-sided flip-free design‧15-year warranty