Casper makes sleeping easier with a strong lineup of offers. The hero deal on this page is the 10% Off Storewide, and it’s best for smaller basket sizes or items that don’t qualify for the bigger promos. If you’re buying a mattress, pillow set, or bedding and want the simplest discount, this is your anchor offer, with the code needed at checkout.
When you’re building a cart, think through your basket size and the items you’re buying. Here is how to pick the best option in common situations.
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Small order around $100 to $150: for a purchase of this size, the 10% Off Storewide typically delivers the most straightforward savings because it applies across mattresses, pillows, and bedding. In this scenario, you would use the 10% storewide code above and see the discount appear at checkout. If you’re buying two pillows, you could also trigger the 10% Off When Your Purchase 2+ Pillows during the September Sale, but that one requires two pillows in the cart and is limited to pillows only; generally the storewide code provides the cleaner savings in a mixed cart.
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Medium order around $250 to $500 and you’re buying a bundle or multiple items: bundles are 25% off during the September Sale and prices are already marked in the product pages. If your cart includes a bundled mattress setup, the bundle discount could be substantial, but the more expansive Up to 35% Off Sitewide would usually beat a 25% off bundle when you qualify for the higher tier, especially on larger purchases. For example, a $400 bundle would see $100 off with the 25% bundle discount, but Up to 35% Off Sitewide could be higher depending on the items in your cart.
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Large orders or mattress-focused carts: if you’re shopping a big mattress or a full bedroom setup, the Up to 35% Off Sitewide offer often provides the strongest potential savings, particularly on larger orders. On a $800 order, 35% would be $280 off, which surpasses the 25% off bundles or the 10% storewide in many cases. The September Sale is time limited and applies to sitewide items, so you’ll want to factor in the current dates and item eligibility. If you’re buying a mattress and a base, the 30% Off Adjustable Base is the strongest deal specifically for the base, so pair that separately if your cart includes an adjustable base.
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Specialty items and add-ons: Protectors and robes show up as deals too. The Waterproof Mattress Protector From $109 and Blanket Robe From $169 are deals you’ll see in the deal section. They’re not codes and will reflect in your cart where applicable, but they’re best viewed as add-ons rather than primary savings levers.
Closing thoughts: compare the offers that apply to your basket and use the one that yields the lowest total at checkout. If a code is involved, you will see the discount applied at checkout, and you can mix in sitewide promos only where terms allow. If your cart qualifies for both a sitewide promo and a product-specific discount, choose the option that reduces the final price the most without violating the terms.