Ifanele abantu abathanda ukulala ngohlangothi olulodwa, abane-vertebra yomlomo wesibeletho nobuhlungu behlombe, basebenze ngefoni ephathekayo noma ikhanda phansi isikhathi eside, futhi ngokuvamile bajuluka futhi besaba ukushisa.Uma ilele ngomhlane, maphakathi ne-3D butterfly design, i-radian ukusekela ikhanda, intamo nehlombe, ukulala kokuvikela intamo.Lapho ulala ohlangothini, umklamo oyingqayizivele wephiko le-occipital elilenga ama-degree angu-45 likhulula ukucindezela kwentamo ukuze ihlombe lisekelwe ngokugcwele.