Is this mattress really waterproof?

The cover is described as waterproof, so spills and light dampness should not soak through. It is still a foam mattress, so standing water or long exposure to rain is not advised.

Can it be used indoors?

Yes. It works on a standard bed frame indoors, though the waterproof cover is mainly an advantage outdoors. The medium-firm feel suits back sleepers and stomach sleepers more than side sleepers.

How firm is medium firm?

Expect a supportive, slightly firm surface rather than a soft sink-in feel. Shoppers who want plush foam should look at a soft or medium model instead.

Gel memory foam is meant to pull heat away better than standard memory foam. In warm outdoor settings it can still feel warm, so airflow under the mattress helps.

The maker lists it for adults and not for kids. For a child's bed, a dedicated kids mattress is the safer choice.

What sizes and setup does it need?

It is an all-foam mattress that works on a slatted or solid frame. Let it expand fully after unboxing before sleeping on it.

What do buyers say about the Alwyn Home Waterproof Medium Firm Foam Mattress?

Rated 4.2 out of 5 from 13 ratings.

Alwyn Home Waterproof Medium Firm Foam Mattress

Best price now

$359.99at WayfairChecked 2 h ago

Prices are checked against each store and labelled with when.

Visit Wayfair

Alwyn Home Waterproof Medium Firm Foam Mattress

Best price now

$359.99at WayfairChecked 2 h ago

Prices are checked against each store and labelled with when.

Visit Wayfair

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Lowest price today: $359.99 at Wayfair (checked Nov 11, 2026).

Our take on the Alwyn Home Waterproof Medium Firm Foam Mattress

The Alwyn Home Waterproof Medium Firm Foam Mattress is a gel memory foam mattress built for outdoor settings such as daybeds and covered porches. Its waterproof cover and medium-firm gel foam target back and lumbar support for adults. It is a niche pick: most mattresses at this firmness are indoor-only, so the water resistance is the main thing setting it apart. Reviewers rate it decently overall, but with few ratings the picture is thin, and buyers should expect a firmer feel than plush foam beds.

Best forOutdoor daybeds and covered porchesAdults who want medium-firm lumbar supportGuest or seasonal sleeping setupsBuyers who need a spill-resistant mattress

Pros

Waterproof cover suits outdoor and semi-outdoor use
Gel memory foam helps with heat compared with plain foam
Medium-firm feel supports the lower back
All-foam core keeps it light and easy to move
Works on daybeds and frames where a standard mattress fits

Cons

Few ratings, so long-term durability is unproven
Not for kids per the maker
Outdoor use limits it to covered, dry-ish spaces
Gel foam still sleeps warmer than spring or hybrid beds
Firmer than shoppers wanting a soft, sink-in feel

Alwyn Home Waterproof Medium Firm Foam Mattress prices at every store

WayfairNew
In stock
$359.99Checked 2 h ago
Visit Wayfair

Alwyn Home Waterproof Medium Firm Foam Mattress price history

Lowest price we've seen: $359.99 on Nov 11 at Wayfair. Tracked across 1 store since Nov 11.

What reviewers say

4.2 / 513 ratings

Ratings are positive overall but based on a small number of buyers. Those who like it mention the firm support and the waterproof top; complaints center on the firm feel and heat.

What people mention

FirmnessMixedSome buyers find the medium-firm feel right for back support, while others say it is harder than expected.
WaterproofingPraisedOwners like that spills and dampness do not soak in, which suits outdoor daybeds.
HeatMixedThe gel foam is cooler than plain memory foam for some, but others still sleep warm.
DurabilityMixedWith few ratings, buyers are unsure how the foam holds up over seasons outdoors.

About the Alwyn Home Waterproof Medium Firm Foam Mattress

This is a medium firm foam mattress made with gel memory foam. It has a foam core and a waterproof build.

It is designed for outdoor use, such as on an outdoor daybed, and is made for adults. It is listed as offering lumbar support.

Brand: Alwyn Home
Firmness: Medium firm
Mattress type: Memory foam
Fill: Gel memory foam
Core: Foam
Water resistance: Waterproof
Use: Outdoor daybed
Users: Adults, unisex (not for kids)

Specifications

Firmness Level: Medium Firm
Mattress Type: Memory Foam
Type: Mattress
Fill Material: Gel Memory Foam
Fill Type: Gel Memory Foam
Core Material: Foam
Material: Gel Memory Foam
For Kids

Questions and answers

Is this mattress really waterproof?: The cover is described as waterproof, so spills and light dampness should not soak through. It is still a foam mattress, so standing water or long exposure to rain is not advised.
Can it be used indoors?: Yes. It works on a standard bed frame indoors, though the waterproof cover is mainly an advantage outdoors. The medium-firm feel suits back sleepers and stomach sleepers more than side sleepers.
How firm is medium firm?: Expect a supportive, slightly firm surface rather than a soft sink-in feel. Shoppers who want plush foam should look at a soft or medium model instead.
Does it sleep hot?: Gel memory foam is meant to pull heat away better than standard memory foam. In warm outdoor settings it can still feel warm, so airflow under the mattress helps.
Is it good for kids?: The maker lists it for adults and not for kids. For a child's bed, a dedicated kids mattress is the safer choice.
What sizes and setup does it need?: It is an all-foam mattress that works on a slatted or solid frame. Let it expand fully after unboxing before sleeping on it.
Where is the Alwyn Home Waterproof Medium Firm Foam Mattress cheapest?: At Wayfair, for $359.99, as of our latest check.
What do buyers say about the Alwyn Home Waterproof Medium Firm Foam Mattress?: Rated 4.2 out of 5 from 13 ratings.