Upgrade & Softness--compared with 3D air mesh technology, 4D Air Mesh Technology was upgraded with better breathability and ventilation, higher resilience and more smooth surface. It is not easy to be out of shape, quicker dry, no bad odor. With more smooth surface, you could enjoy a more comfortable touch.
Very comfortable and supportive. It cushions the neck and back nicely and makes soaking in the tub much more relaxing. It stays in place well and is a simple upgrade that makes the bath feel more like a spa.. Patricia. Rochester Hills. Sun Sep 20 2026
