Puffy vs MLILY WellFlex: Puffy Wins on Value, MLILY on Cooling Build

Choosing between the Puffy Cloud Mattress and the MLILY WellFlex Memory Foam Mattress comes down to how you want a memory foam bed to feel and how much you want to spend. Puffy lists its Cloud model as a medium-firm, six-layer memory foam mattress with a 365-night trial and a lifetime warranty. MLILY sells the WellFlex in two firmness versions, Firmer 1.0 and Plusher 3.0, built around a BioBreeze memory foam comfort layer and a 9-inch Flex Support base. Both are all-foam designs aimed at pressure relief, and both are sold with free shipping. The Puffy Cloud takes this comparison on value and trial terms, while the MLILY WellFlex is the pick for sleepers who want a choice of firmness and a foam built with bio-based content.

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Which mattress should you buy, Puffy or MLILY?

The Puffy Cloud Mattress is the better buy for shoppers who want a straightforward medium-firm memory foam mattress backed by a 365-night trial and a lifetime warranty at a lower listed price. The MLILY WellFlex Memory Foam Mattress suits sleepers who want to choose between a Firmer 1.0 and a Plusher 3.0 feel and who value a comfort layer made with at least 30 percent bio-based carbon. Puffy lists the Cloud at $449 as shown on its product page, while MLILY lists the WellFlex at $1,299.00. If firmness choice matters more than price, the MLILY wins; for most shoppers, Puffy offers the stronger package.

Who is the Puffy Cloud Mattress for?

The Puffy Cloud Mattress is for sleepers who want a medium-firm memory foam mattress with a cradling, body-adapting feel and a soft breathable knit cover. Puffy describes the Cloud as a six-layer build rated medium-firm, aimed at cradling back support and a cool-to-the-touch surface. It suits couples who value less motion transfer and shoppers who want a long trial window, since Puffy includes 365 nights to try the mattress at home. The Cloud is offered in sizes from Twin through Cal King, plus Split Head options, so it fits most bedroom setups. Shoppers who want a hybrid with coils should look at our best hybrid mattresses instead.

Who is the MLILY WellFlex Memory Foam Mattress for?

The MLILY WellFlex Memory Foam Mattress is for sleepers who want cooling comfort, pressure relief and a firmness they can pick. MLILY sells the WellFlex in two versions: Firmer 1.0 and Plusher 3.0, each available in Twin, Twin XL, Full, Queen, King and California King. The comfort layer uses BioBreeze Memory Foam, which MLILY says is reengineered from its AeroFusion Memory Foam with at least 30 percent bio-based carbon. A cooling knit cover made with organic and recycled materials sits on top, and a fiberglass-free flame-retardant inner cover wraps the build. The WellFlex suits shoppers who want a memory foam mattress with a sustainability angle and a choice of firmness. Shoppers focused on foam should also see our best memory foam mattresses.

How do the Puffy Cloud and MLILY WellFlex compare on specs?

The Puffy Cloud Mattress is a six-layer medium-firm memory foam mattress with a 365-night trial, a lifetime warranty and free shipping. The MLILY WellFlex Memory Foam Mattress is an all-foam build offered as Firmer 1.0 or Plusher 3.0, with a 9-inch Flex Support base foam layer, a fiberglass-free inner cover and free shipping expected to ship in 5 to 14 days. The table below lines up what each brand states.

Which feels better, the Puffy Cloud or the MLILY WellFlex?

The Puffy Cloud Mattress feels medium-firm with a cradling, body-adapting memory foam surface, while the MLILY WellFlex Memory Foam Mattress lets you choose between a Firmer 1.0 and a Plusher 3.0 feel. Puffy rates the Cloud medium-firm and describes a soft, breathable knit cover that sleeps cool to the touch. MLILY builds the WellFlex around a 1-inch BioBreeze Memory Foam comfort layer over a 2-inch Performance Memory Foam layer and a 9-inch Flex Support base, so the whole mattress is foam with no coils. Side sleepers who want more give may lean toward the Plusher 3.0 WellFlex, while shoppers who want one balanced feel can take the Puffy Cloud as listed. Neither brand publishes a numbered firmness scale for these two models, so compare the described feel rather than a score.

Which materials are better, Puffy or MLILY?

The MLILY WellFlex Memory Foam Mattress uses materials with a clearer sustainability story: its BioBreeze Memory Foam is made with at least 30 percent bio-based carbon, and its cooling knit cover uses organic and recycled materials. MLILY also states a fiberglass-free flame-retardant inner cover for the WellFlex, which is a useful detail for shoppers avoiding fiberglass in foam mattresses. Shoppers who prioritize organic and natural materials should also read our best organic mattresses.

Which is better for hot sleepers, Puffy or MLILY?

Both the Puffy Cloud Mattress and the MLILY WellFlex Memory Foam Mattress are designed with cooling in mind, and each brand describes its own approach. Puffy says the Cloud is cool to the touch with a soft, breathable knit cover. MLILY says the WellFlex uses BioBreeze Memory Foam to promote breathability and a cooling knit fabric cover to improve airflow, and its Plusher 3.0 build adds a 1.5-inch Gel AeroFusion Memory Foam layer with micro-channels for airflow. If you sleep hot and want the more detailed cooling layer story, the MLILY WellFlex describes more cooling-specific foam. Shoppers who want airflow from coils rather than foam can check our best latex mattresses for a different build type.

What do trial, warranty and shipping look like for each?

Puffy includes a 365-night sleep trial, a lifetime warranty and free shipping with free returns on the Cloud Mattress, and the brand states the mattress ships in 1 to 2 days. That gap matters: a 365-night trial and a lifetime warranty are concrete terms Puffy publishes, while MLILY shoppers should confirm trial and warranty terms before ordering. Both brands list free shipping, so delivery cost is not a differentiator here.

How do the prices compare?

Puffy lists the Cloud Mattress at $449 as shown on its product page, and MLILY lists the WellFlex Memory Foam Mattress at $1,299.00 as shown on its product page. Those are the list prices each brand publishes for this comparison, and they are not the same size tier on both sides, so treat them as brand-listed figures rather than a direct size-to-size match. Puffy also runs frequent sales, so check today’s price before you buy. The price gap is the clearest single difference in this face-to-face: the Puffy Cloud sits far below the MLILY WellFlex on the numbers each brand publishes.

Who should buy the Puffy Cloud, and who should buy the MLILY WellFlex?

Buy the Puffy Cloud Mattress if you want a medium-firm memory foam mattress with a 365-night trial, a lifetime warranty, free shipping with free returns and a listed price of $449. The Cloud suits shoppers who want one balanced feel, a soft breathable cover and a long window to decide at home. Buy the MLILY WellFlex Memory Foam Mattress if you want to choose between Firmer 1.0 and Plusher 3.0, and if a comfort foam made with at least 30 percent bio-based carbon plus a cover with organic and recycled materials matters to you. The WellFlex suits sleepers who want a fiberglass-free inner cover and a 9-inch support base, and who are comfortable confirming trial and warranty terms directly with MLILY before ordering. Neither mattress is a coil bed, so if you want springs, the Saatva Classic below is the different build to consider.

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• 365-night home trial
• Free white-glove delivery and old-mattress removal
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World Sleep Almanac score: 7.6/10

The World Sleep Almanac editorial team rates the Puffy Cloud Mattress and the MLILY WellFlex Memory Foam Mattress together in this face-to-face, with the Puffy Cloud as the stronger overall package. Our score is editorial and based on these criteria:

• Price and value: 8/10. Puffy lists the Cloud at $449, well below the MLILY WellFlex at $1,299.00, and both include free shipping.
• Trial and returns: 8/10.
• Warranty: 8/10. Puffy backs the Cloud with a lifetime warranty; no warranty term is stated for the WellFlex here.
• Materials and construction: 7/10. Both are all-foam builds; MLILY’s bio-based foam and fiberglass-free cover stand out, while Puffy’s six-layer medium-firm design is clearly described.
• Delivery: 7/10. Puffy ships in 1 to 2 days; MLILY lists 5 to 14 days.

Frequently asked questions

Is the Puffy Cloud Mattress softer than the MLILY WellFlex?

Puffy rates the Cloud medium-firm, and MLILY offers the WellFlex as Firmer 1.0 or Plusher 3.0. The Plusher 3.0 WellFlex is the softer of the two MLILY options, so a shopper who wants more give should compare the Plusher 3.0 against the Puffy Cloud’s medium-firm feel rather than the Firmer 1.0.

Does the MLILY WellFlex contain fiberglass?

MLILY states that the WellFlex Memory Foam Mattress uses a fiberglass-free flame-retardant inner cover, so fiberglass is not part of this build as described by the brand. The Puffy Cloud product page does not address fiberglass for this model.

Can I try the MLILY WellFlex at home before keeping it?

MLILY does not state its trial terms on the page, while Puffy publishes a 365-night sleep trial for the Cloud Mattress.

Which mattress ships faster?

Puffy says the Cloud Mattress ships in 1 to 2 days, while MLILY lists an expected ship window of 5 to 14 days for the WellFlex. Both brands list free shipping.

The verdict

The Puffy Cloud Mattress wins this face-to-face for most shoppers. It pairs a medium-firm, six-layer memory foam build with a 365-night trial, a lifetime warranty, free shipping with free returns and a listed price of $449, which is a strong package for the money. If neither all-foam bed is right, the Saatva Classic offers a coil build with three comfort levels, a 365-night home trial, free white-glove delivery and a lifetime warranty. For a deeper dive on either model, read the Puffy Mattress review or the MLILY WellFlex Memory Foam review.

Reviewed by the World Sleep Almanac editorial team. Updated October 2026.