4Sleep vs Zonkd vs Casper

4Sleep, Zonkd and Casper are included in the same product category. You can buy these options in numerous sizes from Twin to Cali King. Quilted foam is also a unique design featured in these trending sleep surfaces. The delivery is quick and hassle-free. All these beds offer repair and exchange through their warranties. These bed-in-a-box mattresses are easy to handle and unpack.