I was looking for a new pillow because the one I had been using for many years had become hard. The pillow I bought elsewhere was also for sleeping on one's side, but when I tried it after buying it, it was a bit too high and hard to sleep on, so it didn't suit me. I wish the pillow could be adjusted, but I bought a pillow that couldn't be adjusted, so I'm keeping it around in case I need it. When I first started using this pillow from Nitori, I slept with the filling in place, but it was still too high for me was too high for me, so I removed the urethane filling and slept on it, and it became the perfect height, so I've been getting a comfortable night's sleep ever since. Finding a pillow that suits you is very difficult. A comfortable night's sleep is the most important thing, but I don't have the financial means to buy a new one every time I change my mind, and I'd also made a mistake in my choice of pillow, so I didn't have the courage to buy this pillow from Nitori, and I was in a quandary for a long time. I had the chance to buy another product, so I bought it together. I'm glad I took the plunge and bought it