List Price: ZINUS 12 Inch Euro Top Pocket Spring Hybrid Mattress / Pressure Relief / Pocket Innersprings for Motion Isolation / Bed-in-a-Box, Queen. The Pressure Relief Euro Top iCoil Hybrid Mattress has a half-inch top layer of fiber padding covering three layers of foam and 7.5 inches of individually pocketed springs. 4.3 out of 5 stars 477 ratings. Zinus 13 Inch Euro Top Pocket Spring Hybrid Mattress/Pressure Relief/Pocket Innersprings for Motion Isolation/Bed-in-a-Box, Queen 4.4 out of 5 stars 417 $403.68 Zinus 12 Inch Cloud Memory Foam Mattress / Pressure Relieving / Plush Feel / Bed-in-a-Box / OEKO-TEX and CertiPUR-US Certified, Queen Visit the Zinus Store. With an upper layer that feels like a plush pillow top and supportive, contouring high-density foam and innerspring coils, the experience is one of cushion and responsive support. In this review, we’re going to tell you everything you need to know about one of the most popular, and affordable, hybrid mattress models: the Pressure Relief Gel Memory Foam iCoil hybrid. Pressure Relief Extra Firm iCoil Hybrid This mattress is one that is designed for those who enjoy a firm bed to sleep on.