Under Knee Pillow for Back Sleeping - Memory Foam Half Moon Leg Bolster Pillow for Back Pain, Thoracic Support

I bought this under-knee pillow hoping it would help with lower-back stiffness from sleeping on my back, and it has honestly made a noticeable difference from the first night. The foam is firm enough to keep my knees elevated without sinking down, but still soft enough to feel comfortable all night. It doesn’t flatten out, even after several hours of use. The curved shape fits naturally under the knees and keeps my legs aligned so I’m not waking up with hip or back pain. The cover is soft, breathable, and easy to remove for washing, which is a huge plus. It also stays in place—no sliding around or bunching under the blanket. If you’re a back sleeper, dealing with sciatica, pregnancy discomfort, or general lower-back tension, this pillow offers real support without feeling bulky or awkward. I didn’t expect such a simple product to make such a difference in my sleep quality, but it really has.

I love this addition to my bedtime routine, it does perfectly under my knees and helps keep my back aligned. It is also very comfortable, not too soft, just right. It’s the perfect height for me, not too high or too low. If I turn on my side it fits between my legs or sometimes I just kick it off the bed. Definitely glad I bought this.

Extremely comfortable; good materials. Can use for neck, knee, calf or ankle support.

This under-knee pillow has made a huge difference in my sleep. The memory foam is supportive without being too firm, and it instantly relieves pressure on my lower back when lying on my back. The cover is soft, breathable, and easy to wash. Overall, a simple but effective fix for back pain. I wish I had bought it sooner!

Nice length. It is the typical memory foam but works for intended use. Compresses depending on leg position but just shift you weight and it instantly recovers. Nice quality.

I originally purchased this pillow for knee support. It's the right size, but it's made of memory foam, which I didn't realize would "squish" down underneath your legs until it's nearly flat. So it doesn't quite work well for support, though it's good for things like keeping your knees separated when sleeping on your side. Would not buy another memory foam pillow for my knees though.

This pillow has really helped me improve my sleep. I've been having trouble with hip pain when I sleep on my back or my side, so I followed the recommendations to get an extra pillow. I use this one under my knees when I sleep on my back, and I use it between my knees when I am laying on my side, and the difference was immediate from the first night. I sleep more comfortably and don't wake up as often during the night. It's a perfect size and is firm enough to hold my legs but also soft enough to squish to the right shape as I sleep.

It helps my legs to relax and I sleep better.