The pillow is usually placed on the newborn's tummy to 'cushion' him/her from any sudden movements or loud noises.
As the bean sprout husk is generally very light, the baby will not feel the weight of the pillow.
Infact, by placing the pillow on the baby's tummy will give him/her a sense of security.
Bean sprout husk pillows are not only for newborns or babies. Adults can use the pillows too.
Use it as a neck rest or an eye shield during long journey travelling.
It helps to shield the eyes from the light and is very comfortable and soothing, allowing for a better sleep.
My son has one too, made by my grandmother herself.
It seems kinda true about what they say about the bean sprout pillow as before the pillow was introduced to my son, he wakes up or "jumps" suddenly during his sleep.
But after giving the pillow to him, things were better.