Casper The One All Foam King Size Mattress

The One is Casper's signature affordable foam mattress, featuring three thoughtfully engineered foam layers that work together to cradle your body, relieve pressure, and support restful sleep night after night. Its medium-firm feel strikes the balance between plush comfort and dependable support --- delivering the kind of sleep experience typically reserved for higher-priced mattresses.

Backed by a 90-Night Sleep Trial, The One lets you experience the difference Casper's foam engineering makes --- completely risk-free.

The One's comfort foam layers conform closely to the body's curves, gently cradling pressure points at the shoulders and hips. This targeted contouring helps reduce aches and pains, particularly for side and back sleepers who need extra cushioning at key contact areas throughout the night.

The foam construction of The One absorbs and dampens motion transfer naturally, preventing disturbances from traveling across the mattress surface. This makes it a great choice for couples or light sleepers who need to stay undisturbed even when a partner shifts positions or gets in and out of bed.

The One's three-layer foam system delivers a medium-firm feel that provides responsive pushback to keep your spine properly aligned while you sleep. The supportive base foam ensures the mattress holds its shape over time, maintaining consistent comfort for a wide range of body types and sleep styles.

The One is built from the ground up with three distinct foam layers, each designed to serve a specific purpose in delivering comfortable, supported sleep. From the durable base that anchors the mattress to the breathable comfort layer on top, every inch is thoughtfully constructed to balance softness and structure.

• Durable Foam Base --- stays supportive year after year, maintaining the mattress's shape and preventing sagging over time
• Cradling Memory Foam --- keeps you aligned and asleep by contouring to your body and supporting proper spinal position
• Breathable Comfort Layer --- helps you get cozy from the moment you lie down, softening the surface for a welcoming feel
• Medium-Firm Feel --- a universally comfortable firmness level designed to suit back, side, and combination sleepers