Easy to Maintain: Made from machinewashable materials, our pillows are easy to care for. They can be machinewashed and tumbledried at low temperatures for longevity. Vacuumsealed for convenience, they will expand to their proper size within 24 hours Best Support: Our pillows' standard size set of 4 is designed with a blend of 50% 3D Gel Fiber and 50% 7D Hollow Fiber. This combination helps maintain the neutral alignment of your head, neck, and spine. This alleviates neck pain and body pressure OEKOTEX Certified: Our pillow set is OEKOTEX Standard 100 certified, adhering to high safety and environmental standards. These twin pillows set of 4 offer a safe and comfortable sleeping experience you can trust Hypoallergenic 100% Polyester Fiber with downalternative loft technology Ideal for All Sleeping Positions: Whether you sleep on your back, side, or stomach, our pillows set of 4 provide exceptional support and comfort for all sleeping positions. Wake up feeling rejuvenated and wellrested, regardless of your sleeping style