47% of the population are side sleepers, are you one of them? This knee pillow is created with side sleepers in mind --- it creates the proper posture and helps ease back, leg, knee, ankle and hip joint pain by providing proper spinal alignment and reducing pressure. Also perfect as a knee spacer during pregnancy or post-surgery recovery (hip replacements). Our pillow is constructed out of study urethane foam with a 1” gel infused memory foam outer layer on the sides which helps keep you cooler while molding the pillow to your exact shape. We’ve topped it off with a machine washable, breathable knit cover. 11"L x 8.5"W x 7"D