Pillow Cube SIDE CUBE RISER For the side sleeper who's done guessing at pillow height: meet your perfect fit. The Side Cube Riser is a patent-pending modular pillow built specifically for side sleepers — engineered to fill the 90-degree gap between your shoulder and your head with a customizable stack that lets you fine-tune your sleep height to the inch. One pillow, three configurations, zero compromises. When you sleep on your side, the distance from your shoulder to your ear is unforgiving. A pillow that's too short lets your head drop, kinking your neck toward the mattress. Too tall, and your neck pushes the other way. The Side Cube Riser is built on the same cube shape that made Pillow Cube famous — squared off to fill the shoulder gap completely and cradle your head in neutral alignment. Three Heights in One Pillow The Side Cube Riser ships fully stacked at 5 inches — the height that works for most side sleepers right out of the box. If it feels too tall, the included risers come off in two simple steps. 5" – Full stack, ideal for most side sleepers and broader shoulders. 4" – Remove one 1" riser for a slightly lower profile. 3" – Remove both risers for a low, plush feel. No second pillow. No stacking. No nightly adjustments. Set it once to the height that fits your body and your mattress, and let your spine do the rest. A Closer Look Inside Three distinct layers, one cohesive pillow. The modular construction stays neatly stacked while you sleep, so there's no shifting and no resettling. Want to change your height? Unzip the cover, pull a layer, zip it back up. That's it. Premium AeroFoam Core At the heart of the Side Cube Riser is AeroFoam — a breathable, viscoelastic polyurethane foam that holds firm support without trapping heat. Unlike traditional pillow filler that flattens and shifts overnight, the AeroFoam core keeps its shape and its lift, so the alignment you go to sleep with is the alignment you wake up with. Built to Stay Cool, Stay Clean The soft, ventilated outer shell pulls heat away from your face and neck, helping you sleep cooler through the night. When it's time for a refresh, the cover unzips and goes straight into the washing machine — no specialty care, no fuss. Made for Side Sleepers, By Side Sleepers Pillow Cube was founded on a simple frustration: traditional pillows weren't designed for the way most of us actually sleep. The Side Cube Riser is the latest evolution of that mission — taking the original cube concept and giving you control over the one variable that matters most. If you've spent years folding, flipping, or stacking pillows trying to find the right height, this is the pillow that ends the search. Patent-pending modular design – Two removable 1" risers for true height customization. Three custom heights – Adjust between 3", 4", or 5" to match your body and mattress. Dimensions – 12" W × 24" L × 5" H (fully stacked); approximately 2.5 lbs. Premium AeroFoam fill – Breathable viscoelastic polyurethane that holds its shape. Soft, breathable cover – Removable and machine washable for easy care. HSA/FSA eligible – Use pre-tax dollars at checkout via Flex. 60-night risk-free trial – Time to dial in your perfect fit. One pillow. Three heights. The end of the pillow hunt.Add the Side Cube Riser to your sleep setup and find out what proper side-sleeper alignment was supposed to feel like.
