YAWNDER MATTRESS REVIEW
Review method: This guide examines Leesa’s published specifications and direct-purchase terms. It does not report a hands-on test of the Oasis Chill. Prices and policies can change.
Our Verdict
The Leesa Oasis Chill Hybrid is a candidate for shoppers who want a cooling-oriented foam-and-coil mattress with a cushion-firm feel. Leesa describes a 13.5-inch build with a cool cover, copper-infused memory foam and zoned coils. It may be a useful starting point for back or combination sleepers who generally prefer a more substantial surface, but personal comfort cannot be established from that description alone.
This model uses passive cooling materials rather than powered temperature control. We have not tested it and cannot independently score its cooling, pressure relief, edge support or durability.
Oasis Chill at a Glance
| Feature | Leesa’s information |
|---|---|
| Type | Foam-and-coil hybrid |
| Height | 13.5 inches |
| Feel | Cushion firm, described as medium to medium-firm |
| Comfort layers | Quilt foam, copper-infused memory foam and responsive foam |
| Support | Zoned lumbar springs and support foam |
| Direct trial | 365 nights, subject to conditions |
| Warranty | Limited lifetime warranty |
Who Should Consider It?
- Shoppers who want foam cushioning over springs and prefer a cushion-firm starting point.
- People interested in a cooling-oriented cover and willing to test it with their usual bedding.
- Buyers who want a substantial 13.5-inch mattress profile.
- Couples who can evaluate motion and edges together during an eligible trial.
Who Might Prefer Something Else?
- Side sleepers who already know they need a very soft surface.
- People seeking multiple firmness options within the same model.
- Buyers expecting powered cooling or guaranteed overnight temperature.
- Anyone seeking an all-latex or low-profile mattress.
Construction and Cooling
Leesa lists an Ultra Cool cover, 1.75 inches of quilt foam, 1.5 inches of copper-infused memory foam, 1.5 inches of responsive foam, 8 inches of zoned lumbar springs and a support foam base. The listing identifies the foams as CertiPUR-US certified. That certification applies to foam meeting its criteria; it should not be confused with certification that every component or the completed mattress is organic.
A cool-to-the-touch cover and copper-infused foam are passive features. They do not actively cool a bedroom or guarantee a particular temperature overnight. Sheets, a protector, room temperature and the sleeper all affect the result. For an overview of active and passive cooling options, see our cooling topper vs. bed cooling system comparison.
Sleeping Positions and Firmness
Leesa calls the Oasis cushion firm. A firmness label is a starting point, not a universal measurement. Side sleepers should check shoulder and hip pressure, especially if they are lighter and compress the mattress less. Back sleepers should assess comfortable contact at the lower back and hips. Stomach sleepers should check whether their hips settle comfortably without excessive sink. Combination sleepers should roll through their normal positions to see whether the foam response suits them.
Size, setup and materials
Leesa lists the queen Oasis Chill at 60 by 80 by 13.5 inches and approximately 101 pounds; the king is listed at 123 pounds. Arrange help moving the mattress, and measure your doorway, bed height and fitted-sheet pocket depth before delivery. Leesa says dimensions can vary slightly.
Leesa describes a fiberglass-free fire barrier, CertiPUR-US certified foam and a GREENGUARD Gold certification for low chemical emissions. Those certifications have specific scopes; they do not mean the mattress is organic. The company lists optional in-home setup and old-mattress removal through its checkout; confirm availability and the final charge for your location.
Motion and Edge Support
The foam and coil layers can influence partner movement, but specifications alone do not establish the amount of motion transfer. Have one partner turn over while the other lies still. Sit and lie near the edge if a stable perimeter matters for getting in and out. We have not measured these features on this model.
Oasis Chill vs. Sapira Chill and Other Hybrids
Leesa lists the Oasis Chill at 13.5 inches with a cushion-firm feel. Its Sapira Chill is listed at 14 inches and comes in Plush, Medium-Firm and Firm. Multiple firmness options may make the Sapira Chill worth comparing if the Oasis feels too firm or too soft, but neither model has a universally correct feel. Compare the same size and final price with the Leesa Sapira coverage and other cooling hybrids. A cooling cover and zoned springs do not guarantee a better fit.
| Feature |  Oasis Chill |  Sapira Chill |
|---|---|---|
| Height | 13.5 inches | 14 inches |
| Firmness choices | Cushion firm | Plush, Medium-Firm, Firm |
| Build | Foam and zoned coils | Pillow top, foam and zoned coils |
Compare the exact selected model and seller terms; the labels are Leesa’s descriptions, not Yawnder test scores.
For a different construction, see Leesa Natural Essential vs. Luxe, which includes latex. Check the seller’s current policies for each model.
Price, Trial and Warranty
Leesa’s page showed a queen price of $1,549 when checked October 29, 2026. Promotions and sizes change; compare final delivered prices. Leesa advertises a 365-night direct trial and recommends at least 30 nights of use. Its policy describes a return window from day 31 through day 365, requires a clean, undamaged mattress and limits eligible trial returns to two mattress purchases per household or shipping/billing address. It lists a $100 return fee in Alaska, Hawaii and Canada. Leesa may arrange pickup or ask for donation with a receipt, depending on its instructions. Read the current policy for eligibility and fees.
The advertised limited lifetime warranty covers qualifying defects under written conditions. Check foundation requirements and claim procedures. Retailer return terms may differ from Leesa’s direct policy.
Frequently Asked Questions
Is the Oasis Chill all foam?
No. It combines foam comfort layers with a zoned coil support unit.
Is it actively cooled?
No powered cooling system is listed. Its cover and foam are passive cooling features.
Is cushion firm the same as firm for everyone?
No. Body size and preference affect perceived firmness. Use the eligible trial to judge the feel.
How tall is it?
Leesa lists 13.5 inches. Check the combined bed height and fitted-sheet pocket depth.
Our Final Take
The Oasis Chill offers a cushion-firm hybrid design with passive cooling materials. Compare the exact configuration and seller terms, then assess pressure and temperature in your usual sleep setup.
Sources: Leesa Oasis Chill, Sapira Chill, and trial and returns pages, checked October 29, 2026.