Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.
TermsPrivacy
Deal.ai › Compare

SOMNIKEN 5" Twin Memory Foam Mattress vs MLILY 6 Inch Memory Foam Mattress

Buy the SOMNIKEN for a child's bunk or trundle bed: its 5-inch profile fits low rails, and the gel-infused foam and washable cover suit kids. Buy the MLILY if you want a slightly thicker, denser foam mattress in a box for a guest or teen room. Both are medium-firm memory foam with modest ratings; the SOMNIKEN has a small but real owner base at 4.3 from 40 ratings, while the MLILY has too few ratings to judge. Neither is a long-term adult mattress.

  • Choose the SOMNIKEN if you need a low-profile twin for a bunk bed, trundle or small room and want a removable, machine-washable cover.
  • Choose the MLILY if you want a thicker 6-inch memory foam twin that ships compressed in a box and has a cotton-blend cover.

Prices

  • SOMNIKEN 5" Twin Memory Foam Mattress: $54.97 at Walmart (checked today)
  • MLILY 6 Inch Memory Foam Mattress: $84.23 at Amazon (checked today)
  • Difference: the SOMNIKEN 5" Twin Memory Foam Mattress is $29.26 cheaper than the MLILY 6 Inch Memory Foam Mattress today
SOMNIKEN
SOMNIKEN 5" Twin Memory Foam Mattress for Kids

SOMNIKEN 5" Twin Memory Foam Mattress

SOMNIKEN 5" Twin Memory Foam Mattress for Kids

4.3(40 ratings)
$54.97at WalmartChecked 10 h ago
See all prices and details
Visit Walmart
Pros
  • Low 5-inch height fits bunk and trundle frames
  • Gel-infused foam helps with heat
  • Washable removable cover
  • No fiberglass; certified materials
  • Established rating from 40 owners
Cons
  • Thin foam wears faster under heavier sleepers
  • 5 inches gives less cushioning for adults
  • Limited to twin size
MLILY
MLILY Twin Mattress 6 Inch Memory Foam Mattress Twin Size in a Box

MLILY 6 Inch Memory Foam Mattress

MLILY Twin Mattress 6 Inch Memory Foam Mattress Twin Size in a Box

$84.23at AmazonChecked 12 h ago
See all prices and details
Visit Amazon

As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • 6 inches of foam gives more support
  • Ships compressed in a box, easy to move
  • Cotton-blend cover breathes better than polyester
  • Medium-firm feel suits teens and guests
Cons
  • Cover not stated as removable or washable
  • No cooling gel layer
  • Few owner ratings to judge durability
  • Boxed foam needs time to fully expand

What separates them

SOMNIKEN 5" Twin Memory Foam MattressMLILY 6 Inch Memory Foam Mattress
Thickness5 inches, low profile for bunk and trundle beds6 inches, more foam under the sleeper
CoverRemovable and machine-washable92% cotton, 8% polyester; not stated as removable
CoolingGel-infused foam to reduce heat buildupStandard memory foam, no cooling layer stated
FiberglassMade without fiberglassNot stated
ShippingNot stated as bed-in-a-boxCompressed and rolled in a box
Owner feedback4.3 out of 5 from 40 ratingsToo few ratings to judge
FirmnessMedium-firmMedium-firm
Intended sleeperKids and small spacesGeneral twin use, guest or teen rooms

Price history

$109.99$53.99
Nov 4Nov 10
  • SOMNIKEN 5" Twin Memory Foam Mattress: lowest $53.99 on Nov 10 at Amazon.
  • MLILY 6 Inch Memory Foam Mattress: lowest $84.23 on Nov 10 at Amazon.

Prices at every store

SOMNIKEN 5" Twin Memory Foam Mattress

  • WalmartNew

    In stockSold by SOMNIKEN HomeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $54.97+ $24.99 shippingChecked 10 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $53.99+ $39.99 shippingChecked 10 h ago
    Visit Amazon
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $109.99Free shippingChecked Nov 8
    Visit Amazon
All 2 stores and price history →

MLILY 6 Inch Memory Foam Mattress

  • WalmartNew

    In stock

    $89.98Free shippingChecked 12 h ago
    Visit Walmart
  • Martexplore.comNew

    In stock

    $97.50Free shippingChecked 12 h ago
    Visit Martexplore.com
  • eBayNew

    In stock

    $110.95Free shippingChecked 12 h ago
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $84.23Free shippingChecked 12 h ago
    Visit Amazon

Store links may earn us a commission.

All 5 stores and price history →

Specs compared

SpecSOMNIKEN 5" Twin Memory Foam MattressMLILY 6 Inch Memory Foam Mattress
colorWhiteWhite
Thickness—6 Inches
Size—Full
Model—ME5-311-6FULL
Height—15.2 cm
Length—190.5 cm
Width—137.2 cm
Weight—11.34 kg
Firmness—Medium Firm
Cover material—92% Cotton, 8% Polyester

What reviewers say

SOMNIKEN 5" Twin Memory Foam Mattress

  • 4.3 / 540 ratings

Buyers rate it 4.3 out of 5 across 40 ratings, with most comments about kids' comfort and the washable cover. Some note it is thin and firms up in cool rooms.

What people mention
  • ThicknessCriticisedSome owners say the 5-inch profile feels thin and offers little cushioning.
  • ComfortPraisedBuyers describe it as comfortable for kids and supportive enough for everyday sleep.
  • CoverPraisedThe removable, machine-washable cover is called out as easy to clean.
  • HeatMixedThe gel foam is meant to sleep cool, but some sleepers still find it warm.

MLILY 6 Inch Memory Foam Mattress

Owners describe a firm, supportive mattress that works well for kids, guests and back sleepers. Many praise the easy setup and motion isolation. Some say it is firmer than expected and thinner than they pictured.

What people mention
  • FirmnessMixedSome owners find it firmer than expected, while back sleepers say the support is right.
  • ThicknessCriticisedReviewers note the 6-inch profile is thin and offers little cushioning for heavier adults.
  • Motion transferPraisedCouples say movement on one side barely carries to the other.
  • SetupPraisedOwners report the boxed mattress expands quickly and is easy to unroll.

Questions and answers

Which is better for a bunk bed?
The SOMNIKEN. At 5 inches it keeps a child lower and safer under top-bunk rails, and the washable cover helps with spills.
Which lasts longer?
The MLILY likely holds up longer because it has an extra inch of foam, but neither has enough owner history to promise years of use. Thin 5-inch foam compresses sooner under heavier sleepers.
Is the MLILY worth stepping up to?
Yes if the mattress is for a teen, guest or adult and thickness matters more than a washable cover. For a young child on a bunk, the SOMNIKEN is the better fit.
Does either sleep cool?
The SOMNIKEN has gel-infused foam to limit heat buildup. The MLILY uses standard memory foam, which tends to sleep warmer.
Do both come rolled in a box?
Only the MLILY is sold compressed in a box. The SOMNIKEN is not described that way, so expect a flat-packed delivery.
Which is firmer?
Both are listed as medium-firm. The MLILY's extra inch of foam will feel slightly more supportive under weight.

Ask our shopping agent

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

Enter to send, Shift+Enter for a new line

More comparisons

  • Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam vs SOMNIKEN 5" Twin Memory Foam Mattress for Kids
  • Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam vs MLILY Twin Mattress 6 Inch Memory Foam Mattress Twin Size in a Box

Buying guides that pick them

  • Best 5- to 6-inch twin mattresses
  • Best mattresses for bunk beds
  • Best twin mattresses for bunk beds