The Side Cube Riser is a patent-pending modular pillow engineered for side sleepers who need a personalized fit — not a one-size-guess. Built on the same cube shape that fills the 90-degree gap between shoulder and head, it ships fully stacked at 5" — the height that works for most people right out of the box. If you need less, simply remove one or both included risers to step down to 4" or 3". One pillow, your perfect height. Patent-pending modular design: Ships fully stacked at 5" — the right height for most side sleepers. Includes two removable 1" risers so you can step down to 4" or 3" if needed. Purpose-built cube shape: Fills the shoulder gap and cradles the head to support neutral neck and spine alignment, reducing pressure on the neck and shoulders. Premium AeroFoam core: Breathable viscoelastic polyurethane foam that allows consistent support while resisting heat buildup. Soft, breathable cover: Ventilated outer shell pulls heat away from the face and neck; removable and machine washable for easy care. Dimensions & weight: 12" W × 24" L × 5" H (fully stacked); approximately 2.5 lbs. HSA/FSA eligible: Select Flex | Pay with HSA/FSA at checkout and follow the brief eligibility steps during payment. The Side Cube Riser ships fully stacked at 5" — the height that fits most side sleepers right out of the box. If it feels too tall, simply remove one or both risers to drop down to 4" or 3".The Side Cube Riser is backed by a 60-night exchange/refund window so you have time to find your perfect height.
