Support Insert Technology: Why We Call It a Support Insert, Not a Core

Crown Lift® is the patented pillow support system that slides inside any pillow to stop it from going flat overnight. The technology behind it is called Support Insert Technology, and the physical piece that goes inside your pillow is called a support insert.

If you've seen Crown Lift referred to as a "core" or a "LiftCore" in older content, that's the same product. We're updating our language to match what customers actually call it — a support insert that lifts and supports your pillow from within.

Support Insert Technology is the patented system behind Crown Lift®. It's built around a simple idea: pillows lose their support over time, and your neck feels it long before you notice the pillow has changed shape.

It works by adding a firm, adjustable support insert underneath the pillow you already own and love. Instead of replacing a pillow that's lost its shape, the support insert restores the lift and support it used to have — while keeping the surface, feel, and fabric of your favorite pillow exactly the same.

The system comes in three heights — 1", 2", and 3" — so it can be customized to the person, the pillow, and the sleep position, rather than forcing a one-size-fits-all fix.

Crown Lift's support piece has also been described as a "core." We've settled on "support insert" because that's what customers actually call it, and it says plainly what the piece is and where it goes.

The support insert is the part of the system that does the actual work: restoring structure to a pillow that has compressed, flattened, or lost its shape.

This is a naming update, not a product change. If you've purchased Crown Lift, own an older box, or have seen it referred to as a "core" in a review, article, or older page — it's the same patented product, same support insert technology, same 30-Night Adjustment Guarantee guarantee. Only the terminology has been updated.

"Insert" may still appear in technical, legal, or patent documentation, where precise mechanical language is required. In everyday use — packaging, the website, and customer-facing content — "support insert" is the correct, current term.

Crown Lift® uses Support Insert Technology to add a support insert to the pillow you already own, restoring the lift and support it had when it was new — without replacing the pillow itself. Whether you've seen it called a "core" or a "support insert," it's the same patented system, backed by the same 30-Night Adjustment Guarantee guarantee.