〖HYBRID INNERSPRING MATTRESS〗 - Crystli full size mattress features better pressure point relief than ever before, a custom coil system provides contouring, cradling support while minimizing motion transfer; In summary, the Crystli mattress full size offers unparalleled comfort, support, and motion isolation, making it a top choice for anyone looking for the ultimate sleeping experience 〖BUY WITH CONFIDENCE〗 - Crystli mattresses multi-layers of CertiPUR-US certified comfort foam are laid in place, working together to bring you the luxury you crave and the ultimate sleep experience you deserve 【Motion Isolation】Individually pocket spring coil and the support of high-density base foam absorb motion disturbance between partners, So if you move around a lot on your side in your sleep and not wake up your partner on the other side; The edge support of this mattress has been strengthened, you will not roll off or be ejected from the mattress