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

Zinus 6 Inch Green Tea Memory Foam Mattress vs Mainstays 6 in Twin Innerspring Mattress

Buy the Zinus 6 Inch Green Tea Memory Foam if you want a foam mattress that conforms to your body and costs less. Buy the Mainstays 6 in Twin Tight Top Innerspring if you want a firm, springy bed for a bunk, trundle, or guest room. The Zinus is $96.99 at Newegg.com as of November 8, 2026, and the Mainstays is $127.60 at eBay as of the same date.

  • Lowest price today for the Zinus 6 Inch Green Tea Memory Foam Mattress: $96.99 at Newegg.com (checked Nov 8, 2026).
  • Lowest price today for the Mainstays 6 in Twin Innerspring Mattress: $127.60 at eBay (checked Nov 8, 2026).
  • The Zinus 6 Inch Green Tea Memory Foam Mattress is $30.61 cheaper than the Mainstays 6 in Twin Innerspring Mattress today.

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

Zinus
Zinus 6 Inch Green Tea Memory Foam Mattress, Twin

Zinus 6 Inch Green Tea Memory Foam Mattress

Zinus 6 Inch Green Tea Memory Foam Mattress, Twin

$96.99at Newegg.comObserved at 2:52 PM
See all prices and details
Visit Newegg.com

Choose the Zinus 6 Inch if you want pressure-relieving memory foam, a 10-year limited warranty, and the lower price.

Pros
  • Memory foam relieves pressure on joints
  • 10-year limited warranty
  • CertiPUR-US foam and OEKO-TEX cover
  • Lower price of the two
Cons
  • Twin supports only 250 lbs
  • Needs 24 to 72 hours to expand
  • Foam can sleep warm
Mainstays
Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam

Mainstays 6 in Twin Innerspring Mattress

Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam

4.2(9,310 ratings)
$127.60at eBayObserved at 2:54 PM
See all prices and details
Visit eBay

Store links may earn us a commission.

Choose the Mainstays 6 in if you want a firm innerspring feel for a bunk bed, trundle, dorm room, or guest room.

Pros
  • Firm innerspring support
  • Low 6-inch profile fits bunks and trundles
  • Gel foam layer adds cushioning
  • Rated 4.2 out of 5 from 9,310 ratings
Cons
  • No warranty stated
  • Innerspring can transfer motion
  • Firm feel may not suit side sleepers

What separates them

Zinus 6 Inch Green Tea Memory Foam MattressMainstays 6 in Twin Innerspring Mattress
Support typeMemory foam that conforms to the bodyInnerspring core with a gel foam layer
FirmnessPlush memory foam feelFirm
Price$96.99 at Newegg.com as of November 8, 2026$127.60 at eBay as of November 8, 2026
Warranty10-year limited warrantyNot stated
Weight limit250 lbs for TwinNot stated
Best useEveryday adult sleepingBunk beds, trundles, dorms, guest rooms
CertificationsCertiPUR-US foam, OEKO-TEX coverCertiPUR-US foam, OEKO-TEX cover
SetupExpands in 24 to 72 hoursMattress-in-a-box

Price history

$128.00$40.00
Nov 3Nov 8
  • Zinus 6 Inch Green Tea Memory Foam Mattress: lowest $96.99 on Nov 3 at Newegg.com; $96.99 on Nov 8.
  • Mainstays 6 in Twin Innerspring Mattress: lowest $40.00 on Nov 8 at Walmart.

Prices at every store

Zinus 6 Inch Green Tea Memory Foam Mattress

  • Newegg.comNew

    In stockSold by BlissLinen

    $96.99Free shippingObserved at 2:52 PM
    Visit Newegg.com
  • WoodArtSupplyNew

    In stock

    $109.99Free shippingObserved at 2:52 PM
    Visit WoodArtSupply
  • AmazonNew

    Availability unknown

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

    $99.99Free shippingObserved at 2:52 PM
    Visit Amazon
  • TargetNew

    Availability unknown

    $117.99Free shippingObserved at 2:52 PM
    Visit Target
All 7 stores and price history →

Mainstays 6 in Twin Innerspring Mattress

  • eBayNew

    In stockSold by ruinow

    $127.60Free shippingObserved at 2:54 PM
    Visit eBay
  • WalmartNew

    Out of stock

    $40.00Free shippingObserved at 2:53 PM
    Visit Walmart

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission.

All 2 stores and price history →

Specs compared

SpecZinus 6 Inch Green Tea Memory Foam MattressMainstays 6 in Twin Innerspring Mattress
Length75 in long75.00 Inches
SizeQueen, Twin, King, Full, California King, Twin …—
Thickness5 in, 6 in, 8 in, 10 in, 12 in—
bed_size—Twin
mattress_thickness—6 in
color—White
Firmness Level—Firm
Width—39.00 Inches
Mattress Type—Innerspring
Type—Mattress
Futon Mattress Type—Innerspring
Certifications—OEKO-TEX certified cover, CertiPUR-US certified…
Show all 26 specsShow fewer specs
SpecZinus 6 Inch Green Tea Memory Foam MattressMainstays 6 in Twin Innerspring Mattress
Foundation Type—Platform frames, Traditional box springs
Core Material—Innerspring
Cover Material—OEKO-TEX certified cover
Material—Innerspring, Gel Foam
Fill Material—Gel Foam
Fill Type—Gel Foam
Fill Style—Plush (top layer)
Coil Type—Innerspring system
Construction Highlights—Tight Top

What reviewers say

Zinus 6 Inch Green Tea Memory Foam Mattress

Owners of the Zinus green tea line generally call it a good value for guest rooms, kids' rooms and campers, and many say it expands fully within a day or two. The common complaints are that the 6-inch version feels soft and sleeps warm, and that heavier sleepers want more support.

What people mention
  • FirmnessMixedSome owners find the 6-inch foam comfortably soft, while others say it is too soft and lacks support.
  • Sleep temperatureCriticisedSeveral sleepers say the memory foam traps heat and sleeps warm.
  • SetupPraisedOwners report it expands to full thickness within a day or two of unboxing.
  • OdorMixedA green tea scent is noticeable at first; most say it fades within days.

Mainstays 6 in Twin Innerspring Mattress

  • 4.2 / 59,310 ratings

With over 9,000 ratings averaging 4.2, buyers mostly treat this as a budget twin for kids, guests and bunks. Many say it is firm and easy to set up; some find it too thin or too hard for adult use.

What people mention
  • FirmnessMixedBuyers describe it as genuinely firm; some like the support, others find it too hard.
  • ThicknessCriticisedAt 6 inches it is thin, and some adults say they can feel the coils.
  • SetupPraisedOwners say it unboxes quickly and is easy to move into bunks and dorms.

Questions and answers

Which is better for a bunk bed?
The Mainstays. Its 6-inch profile and firm innerspring core suit bunk beds, trundles, and tight spaces.
Which is better for side sleepers?
The Zinus. Its memory foam conforms to the shoulders and hips, while the Mainstays is firm.
Which lasts longer?
The Zinus backs its mattress with a 10-year limited warranty. Mainstays states no warranty.
Is the Mainstays worth the extra $30?
Only if you want a firm innerspring feel. The Zinus costs less and includes a warranty.
Which is better for a guest room?
Either works. The Mainstays is firm and low-profile; the Zinus is softer and cheaper.

More comparisons

  • Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam vs SOMNIKEN 5" Twin Memory Foam Mattress for Kids
  • Zinus 6 Inch Green Tea Memory Foam Mattress, Twin vs Avenco CozyNest 6" Twin Size Medium Supportive Innerspring Mattress
  • FDW Twin Mattress 6 inch Gel Memory Foam Mattress vs Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam
  • Avenco Airsea Adult Supportive Pocketed Coils Memory Foam Hybrid Mattress vs Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam
  • Zinus 6 Inch Green Tea Memory Foam Mattress, Twin vs Novilla 6 Inch Medium Hybrid Mattress
  • Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam vs Zinus 6 Inch Twin Foam and Spring Mattress
  • Zinus 6 Inch Green Tea Memory Foam Mattress, Twin vs Zinus 6 Inch Twin Foam and Spring Mattress
  • Mainstays 6 in Twin Tight Top Innerspring Mattress with Gel Foam vs Zinus 6 Inch Twin Green Tea Memory Foam

Buying guides that pick them

  • Best 6-inch twin bunk bed mattresses
  • Best 5- to 6-inch twin mattresses
  • Best mattresses for bunk beds
  • Best twin mattresses for bunk beds
Specialty Style
—
Tight Top
For Kids—Yes
Typical Users—Lightweight sleepers
Age Range—Universal, Adult, Child
Solution For—Pressure relief
  • ValuePraisedReviewers call it a good cheap twin for guest and kids' rooms.