Choose HIMARI or SORA when the published dimensions fit your room and you can regularly lift, air and keep the bedding dry. Compare the firmer HIMARI with the fuller SORA by personal preference, storage space and the actual local offering. Thickness alone does not determine comfort.
Details to check before choosing
Measure the usable length and width of the floor, platform or bed base, including any raised edges. Compare those measurements with the exact model and size offered for your country. Then check the folded size and weight, and choose a sheet or cover that fits the same dimensions.
After sleep, lift or stand the shikibuton so you can inspect its underside and the supporting surface. Let both release moisture. Air both faces in a ventilated place, turn the bedding over and rotate it head to foot regularly. Fold and store it only when it is dry.
Sources for this answer
Am I choosing for nightly sleep or occasional guests?
If the guest room in your Santiago apartment also serves as a study, plan the day after a visit. A shikibuton can fold away, but it needs somewhere to air before dry storage. For nightly use, consider whether getting up from a low surface and moving the bedding are comfortable tasks for you. A clear room in a photograph cannot settle those everyday questions.
HIMARI is 210 cm long and approximately 10 cm thick overall; SORA is 200 cm long and approximately 12 cm thick. Compare those measurements with the actual support, selected width and storage volume. HIMARI feels firmer, while SORA offers fuller cushioning. Neither description guarantees the feel of your present mattress. Discuss a preference for deep softness and check the chosen variant's weight before deciding.
How do I choose between HIMARI 日葵 and SORA 宙? · How do Japanese shikibuton sizes compare with local bed sizes?