"Baby Elephant Ears" is a neck support accessory developed for newborns and babies before they can hold their heads up. It gently cradles and firmly stabilizes the baby's head, reducing strain on the neck. It maintains a natural and comfortable posture even while moving in a stroller. Unlike typical stroller sheets designed to prevent sweat and dirt, this is a support item that is especially helpful during the period when the neck is still unstable. It gently supports the baby as they grow. It can be washed in a washing machine at home, so it's always clean. Made with 100% cotton material that is gentle on delicate baby skin, and finished with reliable Made in Japan quality. When putting my child in a car seat, I was worried about their head wobbling until they could hold it up, so I used this as neck support. Without it, their neck would wobble from the car's vibrations. They seemed to sleep comfortably, and even after they could hold their head up, they would fall asleep quickly when using this. From a quick look, there were no stains or damage.