Deemed “the best money I’ve ever spent” and a “little miracle worker,” this versatile pillow will earn its place in your bedroom. Just asked one reviewer who jokes she loves it so much, her husband is jealous. Users who used to have hip pain credit the pillow for making their previous aches and pains “a thing of the past,” while others say that thanks to the pillow, they no longer wake up with a sore back, numb legs, or aching joints.

Designed in an hourglass figure with an included strap, the pillow fits between your knees to keep your body aligned as you snooze, reducing pressure and strain through your lower half. According to Beth Terranova, a physical therapist at New York City’s Strength and Spine, this is because, when you’re sleeping, the position of your knees affects the position of your hip, pelvis and spine.

“Keeping your hips stacked helps to not rotate your spine, which can become uncomfortable after sleeping in a rotated position for a while,” Terranova previously told HuffPost.

Don’t sleep on your side? Not to fret.

The pillow is used and loved by all sorts of sleepers. Tuck it between your knees or use it to support your thighs, calves or ankles. Sleep on your stomach with one leg out? It can help support your hip. Plus, it’s great for those transitioning to side sleeping, encouraging you to stay on your side through the night comfortably.