Cooling just one part of the bed only goes so far. The sheet matters, but so does the pillow your face is against for eight hours. Buying separately also means re-checking the same technology twice, and often paying more per piece. This bundle puts the full SESA Air Ice surface together: a Cooling Sheet in your choice of 155×210 cm or 200×210 cm, plus a set of 2 Cooling Pillowcases at 50×70 cm. Both pieces use the same Korean cooling technology — Air Tunnel structure and FORPE fibre by Kolon Industry. FORPE's Q-max of 0.409 — roughly 2.3× cotton's 0.18 — means both the sheet and pillowcases feel cooler the moment they touch skin. Manufacturer testing showed up to -7.8°C surface temperature change on contact, recovering after 3 minutes, with Air Tunnel structure keeping heat and moisture moving away from the body. The result is one consistent cooler surface, head to foot, for less than buying each piece on its own.
