1. Protect your babys head from shaking and shock when traveling! The cushion of the head is approximately 1.6 inches (4 cm) high, protecting your babys head from shaking and shaking when traveling in a stroller or car. 2. No ice packs! Keeps you dry even when you sweat. The 3D mesh material with a three-dimensional structure allows air to circulate at all times, so it wont get sticky even when you sweat, and it will always keep you dry. 3. Uses a special mesh that is soft to the touch. The surface that touches the babys skin is made of a special functional mesh that feels good to the touch.So you dont have to worry about the mesh rubbing and rashing your babys skin.