Tuft & Needle Kin Medium Plush 10 Inch Hybrid Cal King Mattress Review
A Tuft & Needle Kin mattress in a box, 10 inches thick in a Cal King size, built with open-celled T&N Adaptive foam and a gel-infused transition layer, backed by a 10 year limited warranty.
| Brand | Tuft & Needle |
|---|---|
| Model | Kin, 910810170-8070 |
| Size | California King |
| Thickness | 10 inches |
| Dimensions | 83.5 x 72 inches |
| Weight | 97 lb |
| Best for | Cal King sleepers wanting a medium plush hybrid foam mattress with cooling and certified, fiberglass-free materials |
Product Overview
Tuft & Needle positions Kin as a medium plush hybrid mattress suited equally to a guest room or a main bedroom, built on an open-celled T&N Adaptive foam the brand says feels more supportive than latex or memory foam while still sleeping cool.
The mattress arrives compressed in a box for a Cal King size bed, and the listing notes it allows 48 to 72 hours after unboxing for the mattress to fully expand and for any initial odor to dissipate.
Score Breakdown
This verdict is based on the manufacturer's stated specifications, the current Amazon listing and its product images, the confirmed materials and design, real buyer ratings, and our research into the product category. Scores are consistent editorial judgments, not laboratory measurements, and we did not receive a paid sample.
Key Features
Breathable support and pressure relief.
Added cooling on top of the foam base.
Fiberglass free, GreenGuard Gold screened.
Thicker foam layers for durable support.
Long-term and in-home testing coverage.
Design and Build Quality
At 10 inches thick, the mattress is built with thicker foam layers plus a gel-infused transition layer for added cooling and comfort on top of the open-celled T&N Adaptive foam base. The Cal King size measures 83.5 inches long by 72 inches wide, finished in off-white, and weighs 97 pounds.
Materials are CertiPUR-US certified and the mattress is fiberglass free, with GreenGuard Gold screening against over 10,000 harmful chemicals. The listing states it is made in the USA using global components, and that the Kin design is reinvented from the Amazon Nod mattress line.
Performance in Everyday Use
The hybrid foam construction is built around breathability and pressure relief, with the open-celled structure and gel-infused transition layer both aimed at keeping the sleeper cooler than a denser all-memory-foam design, per the listing.
Tuft & Needle backs the mattress with a 10 year limited warranty and a 100-night trial, giving a long testing window to confirm the medium plush feel suits a given sleeper before committing long-term.
How It Performs: The Evidence
| Decision factor | What we found | Evidence and measurement | Score | Why it matters |
|---|---|---|---|---|
| Construction | Open-celled foam + gel transition layer | Listing states open-celled T&N Adaptive foam and a gel-infused transition layer for additional cooling | 8.5 | Confirms the stated hybrid construction |
| Certification | CertiPUR-US, fiberglass free | Listing states fiberglass free and features CertiPUR-US certified foam | 8.8 | Confirms the stated certifications |
| Thickness | 10 inches | Listed item height is 10 inches | 8.3 | Confirms the stated mattress thickness |
| Dimensions | 83.5 x 72 inches | Listed item dimensions give length 83.5 in, width 72 in for the California King size | 8.2 | Confirms the stated Cal King dimensions |
| Weight | 97 lb | Listed item weight is 97 pounds | 7.0 | Confirms the stated mattress weight |
| Warranty and trial | 10 year warranty, 100-night trial | Listing states 10 Year Limited Warranty, 100-Night Trial | 8.6 | Confirms the stated warranty and trial terms |
Who Should Buy It
- Cal King bed frames
- Sleepers wanting a medium plush hybrid feel
- Guest rooms or main bedrooms
- Buyers wanting certified, fiberglass-free materials
- Anyone wanting a firmer feel or a different size than Cal King on this listing
- 97 pounds is heavy to maneuver alone when unboxing a Cal King size
- Needs 48 to 72 hours after unboxing to fully expand and for odor to dissipate
- Medium plush feel on this listing is fixed, not adjustable firmness
- Only available in the off-white color shown on this listing
Full Specifications
How It Compares
| Feature | Tuft & Needle | Typical option | Higher-tier option |
|---|---|---|---|
| Construction | Hybrid foam with gel transition layer | All-foam, no gel layer | Comparable hybrid mattress in a box |
| Certification | CertiPUR-US, fiberglass free | Uncertified foam | Comparable certified mattress |
| Thickness | 10 inches | Thinner profile mattress | Comparable 10 inch hybrid |
| Trial period | 100-night trial, 10 year warranty | Shorter trial and warranty | Comparable long-trial mattress |
| Firmness | Medium plush feel | Firm feel only | Comparable medium plush option |
Alternatives Worth a Look
A 10 inch hybrid foam mattress for a Cal King bed, CertiPUR-US certified and fiberglass free, with a gel-infused cooling layer and a 10 year limited warranty plus a 100-night trial. It suits Cal King sleepers wanting a medium plush, certified mattress in a box well, with the main practical hurdle being its 97 pound weight during setup.
Frequently Asked Questions
What size is this mattress?
California King, per the listing.
How thick is it?
10 inches, per the listing.
Is it fiberglass free?
Yes, and it is CertiPUR-US certified, per the listing.
How long is the trial period?
100 nights, backed by a 10 year limited warranty.
How heavy is the mattress?
97 pounds, per the listing.
How long does it take to expand after unboxing?
48 to 72 hours, per the listing, for full expansion and odor dissipation.
This review is based on the manufacturer's stated materials, certifications, dimensions and warranty terms as listed. It is editorial analysis of the stated specifications, not independent hands on testing of this specific unit's firmness feel or long-term durability.