Perspective view of the South Bay iSwitch 12-inch flippable mattress on a modern dark wood slatted bed frame in a minimalist bedroom. Infographic illustrating the flippable two-sided design of the iSwitch mattress, featuring a softer side and a firmer side for adjustable comfort. Front-facing view of the South Bay iSwitch 12-inch medium-soft mattress highlighting its thick profile and grey textured side panels. Close-up detail of the iSwitch mattress on a designer platform bed, showcasing the high-quality quilted cover and modern bedroom decor. Full side profile of the South Bay iSwitch flippable memory foam mattress illustrating its 12-inch depth and supportive structure. Easy 3-step bed-in-a-box setup infographic for the South Bay iSwitch mattress: unbox, unroll, and sleep within 24-48 hours. Isolated studio shot of the iSwitch 12-inch flippable two-sided mattress by South Bay featuring a white sleep surface and charcoal grey borders. Temperature regulation graphic for the iSwitch mattress highlighting cooling gel-infused memory foam and articulated cuts for airflow. Patented edge-to-edge support infographic for South Bay mattresses providing a 20% larger sleeping surface for families. Firmness level graphic showing the iSwitch mattress provides both medium-soft and medium-firm feels by flipping the mattress. Quality guarantee seals for the South Bay iSwitch mattress including a 10-year warranty, CertiPUR-US certification, and Assembled in USA label. Graphic demonstrating the flexibility of the South Bay iSwitch flippable mattress on a motorized adjustable power base. Cross-section diagram of the iSwitch 12-inch mattress construction showcasing cooling gel layers, edge support, and the Air Grid core. Detailed 5-layer technical diagram of the iSwitch mattress featuring 2-inch gel memory foam, gel swirl foam, and a 6-inch air channel base.
iSwitch Flippable Two Sided Medium Soft 12 inch Mattress By South Bay
Ultra Soft Soft Medium Soft Medium Medium Firm Firm Extra Firm

iSwitch Flippable Two Sided Medium Soft 12 inch Mattress By South Bay

$665.00
$999.00
Save $334.00
Brand: SOUTH BAY
Size
Best for Back and stomach sleepers
i Size Guide
$665.00
Only 12 left in stock
Free USA Wide Delivery Free USA Wide Delivery
10-Year Limited Warranty 10-Year Limited Warranty

The South Bay iSwitch 12 Inch Mattress is a clever 2-in-1 flippable design that lets you choose between two distinct comfort levels by simply turning it over. Cloudy Mattress is the authorized South Bay retailer for this product, so every purchase comes with trusted sourcing and the full manufacturer warranty.

One side of this iSwitch Flippable Mattress offers a medium-soft feel, while the opposite side delivers a medium-firm feel for personalized comfort. Because of this dual sided 12 inch mattress design, sleepers get two mattresses in one value without ever having to make a one-time firmness commitment.

Inside, multiple gel-infused memory foam layers work together with an Air Grid base, with each sleeping surface engineered for personalized sleep surface options. Both sides feature cooling gel memory foam layer technology that dissipates heat and promotes airflow for a more breathable sleep environment.

Furthermore, the central Air Grid base lets body heat escape while supporting flexibility, especially when paired with an adjustable base. A patented edge support system reinforces the perimeter, extending the usable sleeping surface by roughly 20% and providing a steadier feel at the sides.

This combination delivers pressure relieving dual comfort that works beautifully for back, side, and stomach sleepers across both comfort levels. The flippable construction also helps deliver an extended mattress lifespan by allowing more even wear between the two sides over time.

At a full 12-inch profile height, this flippable memory foam mattress is fully adjustable base compatible and pairs well with any modern bedroom setup. Additionally, it arrives via Mattress-in-a-box shipping, compressed and rolled for easy delivery and setup at home.

Backed by a 10-year limited warranty, and with Affirm financing available at checkout for added flexibility.

Dual Firmness in One Mattress

The dual sided 12 inch mattress lets you switch between medium-firm and medium-soft sides, offering customizable firmness levels for changing preferences.

Two Mattresses in One Value

This flippable design delivers two mattresses in one value by giving you two distinct sleep surfaces in a single product.

Cooling on Both Sides

Each surface features a cooling gel memory foam layer that helps dissipate body heat for a temperature-neutral night.

Pressure Relief for All Sleep Styles

This best flippable mattress for side and back sleepers alternative delivers pressure relieving dual comfort across positions.

Patented Edge Support

Reinforced perimeter support extends the usable sleeping surface by roughly 20% and adds stability when sitting on the sides.

Adjustable Base Ready

Fully two sided mattress for adjustable base compatibility, the Air Grid core allows the mattress to flex with modern foundations.

CertiPUR-US Certified Foams

Built with CertiPUR-US certified foam made without formaldehyde, phthalates, heavy metals, or ozone depleters.

Key Mattress Benefits

iSwitch Flippable Two Sided Medium Soft 12 inch Mattress By South Bay

6 Layers
Of Cooling
Comfort

The exterior cover unzips for easy laundering and helps reduce allergens with regular washing. Its cooling design supports a fresher sleep surface on both sides of the flippable mattress.

This top layer of the firmer side delivers temperature-neutral cooling and a structured, supportive feel at the surface. The gel infusion helps dissipate body heat for cooler comfort.

This layer adds extra breathability and cooling between the firmer top and the supportive core. As a result, the firmer side feels both structured and responsive.

This central layer is the high density support foam core of the mattress and lets body heat escape through its grid construction. Furthermore, it supports overall flexibility, especially when paired with an adjustable base.

This generous top layer of the softer side delivers a plush, cradling feel for sleepers who prefer more contouring. Like the firmer side, it uses gel infusion to keep the surface cooler through the night.

A reinforced perimeter is built into the mattress to extend the usable sleeping area by roughly 20%. This system also adds longevity by reducing wear and offers a stable sitting edge when getting in and out of bed.

iSwitch Flippable Two Sided Medium Soft 12 inch Mattress By South Bay
CLOUDY MATTRESS IS THE SMARTER CHOICE
DISCOVER WHY BUYING WITH

CLOUDY MATTRESS IS THE SMARTER CHOICE

From better sleep support to trusted quality, Cloudy Mattress gives you more value for your money.

SHIPPING

FASTEST SHIPPING

Get your new mattress delivered quicker than ever with our priority nationwide shipping. No long waits, comfort arrives right at your door step, fast.

CUSTOMER SUPPORT

24 / 7 CUSTOMER SUPPORT

Whether its day or night, our dedicated team is always available to answer questions, resolve issues, and guide you through every step.

GUIDANCE

EXPERT GUIDANCE

Not sure which mattress suits you best? our sleep experts are here to help you choose the perfect option tailored to your comfort, health and lifestyle needs.

GUARANTEED

BEST PRICE GUARANTEED

Shop with confidence knowing you're getting the best value. If you find a better deal, we'll matach it, guaranteed.

WE'VE GOT ANSWERS
HAVE QUESTIONS?

WE'VE GOT ANSWERS

Designed for deep comfort and better rest, so you wake up refreshed and ready for the day

The iSwitch is both. It is a flippable, two-sided mattress with one medium-firm side and one medium-soft side. You can switch between the two feels simply by flipping the mattress over to suit your preference.

Flipping the mattress involves turning the entire mattress over so the opposite side faces up. Because of the heavier 12-inch profile, it is easier to do this with another person, particularly for larger sizes like queen and king. Always strip the bedding first and avoid bending or folding the mattress during the flip.

A box spring is not required. The mattress can be placed on a continuously solid surface, an adjustable base, or slats spaced no more than two inches apart. Cloudy Mattress also offers an optional box spring with metal foundation as an add-on at checkout.

Yes, the iSwitch works well for side sleepers, especially on the medium-soft side. The thicker 3-inch gel memory foam layer cradles the shoulders and hips where side sleepers need the most contouring, while the firmer side remains available whenever a more structured feel is preferred.

Yes, both sides feature cooling technology. Each sleep surface is built with gel-infused memory foam that helps dissipate body heat, and the Air Grid base allows heat to escape through the core for added breathability throughout the night.

GIVE US A CALL

Speak directly with an expert to find the right support for your sleep style.

+1 800 540 9851

CHAT WITH US

Get the answers you need without picking up the phone.

Let’s Chat!

SEND US A MAIL

Prefer to write it out? Drop us a message, and we’ll get back to you within 24 hours.

Send An Email

Related Products

View All Products