How can one add or remove water?

You can add or remove water via a valve which is accessible once you remove the outer pillowcase. The pillow comes with a small funnel which you can dock to the valve for adding or removing water.

What is the pillow filled with?

The pillow stuffing is made of super soft microfibers. It builds a smooth layer between the inner water bladder and your head, making the pillow feel more comfortable.

Which pillow is best for those with obstructive sleep apnea but who do NOT use a cpap machine

We would recommend our Traditional Sobakawa Buckwheat Pillow our our Basic Buckwheat Pillow. It provides the best support.

Is the water pillow helpful for people experiencing neck pain ?

Yes the water pillow works great for people with neck pain, same as all our other pillows. The advantage of water pillows is that you have better pressure relieve compared to buckwheat pillows. It's almost as if your head if floating, but it's still properly supported.

Can you use warm water in the pillow if you don’t want the cooling effect?

Yes you can use warm water, but our cooling pillowcase will still provide a cooling effect. If you'd like the pillow without the cooling pillowcase, we can arrange that for you.