4Sleep vs REM-Fit Sleep 300 vs Purple

4Sleep, REM-Fit Sleep 300 and Purple are included in the same product category. During periodic maintenance, you can easily reverse these beds. 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.