Ice silk or ice silk with leather is not suitable for winter use. The linen cushion in the four seasons cushion has a relatively high cost performance, but its breathable and porous structure is not resistant to dirt. Down or wool cushions are only suitable for cold weather. Dirt-resistant and good Four Seasons Cushion As a reference, I provide leather and cloth cushions, and the Four Seasons Healthy Cushion filled with special materials is also a good choice.