4Sleep vs Nature's Sleep Euro-Luxury 5 Layer Memory Foam vs Casper

4Sleep, Nature's Sleep Euro-Luxury 5 Layer Memory Foam and Casper are included in the same product category. These models fit adjustable bed bases perfectly. Quilted foam is also a unique design featured in these trending sleep surfaces. The delivery is quick and hassle-free. These bed-in-a-box mattresses are easy to handle and unpack.