1. Place under your knees to elevate your legs while sleeping on your back, or position under your ankles to lift your feet for better circulation, reduce varicose veins, or assist with post-surgery recovery. Ideal cushion for side or back sleeping that helps relieve lower back pain. 2. Helps ease back, leg, knee, ankle, and hip joint pain by supporting proper spinal alignment during sleep. Insert the bolster between your knees for comfortable side sleeping. This dual-layer firm bolster pillow features a memory foam top layer and is covered with a soft, breathable, washable organic cotton cover. 3. Multi-purpose positioning pillow designed to provide therapeutic support for various body areas. Suitable for side and back sleepers, during pregnancy, or after surgery. Offers effective knee elevation during sleep. 4. Color: White Material: Memory Foam Size: 40*20*10cm Package Contents: 1 x Half-round pillow Note: Other products are not included. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3cm.