Our most popular mattress just got an upgrade. Featuring all-new patent-pending Casper Core+™ technology, Cloud One delivers a boost of plushness while giving you all the support and breathability of The One.
What makes Cloud One feel like cloud nine?
INNOVATIVE Casper Core+™: Patent-pending, cloud-like foam pillars provide a boost of plushness. ALL-NIGHT COZINESS: Thicker layers of premium comfort foams keep you cradled and aligned. WAKE UP REFRESHED: Breathability in every layer combats overheating. DECADE OF DURABILITY : Casper mattresses use the highest-quality foams to stay comfortable year after year. The Cloud One foam mattress is especially comfortable for stomach sleepers.
Measurements & Dimensions
Twin 38″ W x 75″ L x 11″ H 42 lbs Twin XL 38″ W x 80″ L x 11″ H 43 lbs Full 53″ W x 75″ L x 11″ H 56 lbs Queen 60″ W x 80″ L x 11″ H 66 lbs King 76″ W x 80″ L x 11″ H 85 lbs California King 72″ W x 84″ L x 11″ H 83 lbs
Materials & Certifications
Top layer of breathable polyurethane foam Second layer of memory foam Durable base of polyurethane foam with patented Core+™ design *Core+™ is a trademark of Casper Sleep Inc.
Warranty, Shipping, & Returns
Free shipping and free returns * *Additional shipping fees apply to Alaska and Hawaii. Terms and Conditions apply. Returns can be initiated after the 30-Night Adjustment Period. Subject to 10-year Limited Mattress Warranty. Learn More Some states charge a Recycling Fee to help fund their mattress recycling programs. This state-mandated fee is added to the cost of each mattress, foundation, and bed frame you order and is not refundable.
Disclaimers
* 92% of Casper customers keep their mattress based on a 12-month cohort of customers who purchased between May 2025-Apr 2026.
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