Split King Mattress
Two twin XL mattresses placed together create a split king. Pair your split
king with our adjustable base for a fully customizable sleep experience.
Shop Split King Size Puffy Mattresses
Save on award-winning mattresses assembled in the USA with the finest materials.
Enjoy select contouring foams, breathable latex, and silky-soft alpaca wool.
Puffy CLOUD Mattress
- Cloudlike cushioning for every sleep style
- Keeps you cool all night with cooling foam
- Our best value premium mattress
Starts at $449
Puffy LUX Mattress
- Enhanced back support with Contour-Adapt Coils
- Cooler, deeper sleep with gel-infused foam
- Medium-plush feel for every sleeper
Starts at $749
Puffy ROYAL Mattress
- Pressure support across 5 targeted zones
- Drier sleep with Premium Blended Wool
- Ultra-plush feel for full-body support
Starts at $1,089
Puffy MONARCH Mattress
- All-season comfort from alpaca wool
- Airy, uplifted feel with responsive latex
- Luxury-plush feel for every sleep style
Starts at $1,949
Puffy LEGACY Mattress
- Hand-tufted with cashmere wool and horsehair
- Ultra-responsive support with Talalay latex
- Our most advanced luxury mattress
Starts at $4,899
Split King Mattress Size Guide
A split king is two twin XL size mattresses side by side. Twin XL dimension: 38 inches wide and 80 inches long.
Split king total dimension: 76 inches wide and 80 inches long.
Mattress Sizes and Dimensions Chart
Find the dimensions of all standard US mattress sizes below.
| Mattress Size | Dimension in Inches | Dimension in Centimeters |
|---|---|---|
| Twin | 38" X 75" | 96.5 X 190.5 |
| Twin XL | 38" X 80" | 96.5 X 203 |
| Full | 54" X 75" | 137 X 190.5 |
| Queen | 60" X 80" | 152 X 203 |
| King | 76" X 80" | 193 X 203 |
| California King | 72" X 84" | 183 X 213 |
| Split King | 2 - 38" X 80" | 193 X 203 |
Why Buy a Split King Size Mattress?
A split king size bed is ideal for sleep partners who want to customize their individual sleep experience with added toppers, layers, and unique elevation settings when used alongside an adjustable base.
The Best of Both Worlds
All the extra legroom of a twin XL, but with the width of a king size. The ultimate customized sleep experience.
Versatile
A split king easily becomes two smaller twin XLs again, for guests, cozy movie nights, or anything else life throws your way.
Great for Couples
Joining two twin XL mattresses together for a king size bed is a dream with a split base. Explore bases here.
Feels Like Sleeping On a Cloud
As with any Puffy mattress, the split king size option has been designed with the same quality and attention to detail. Our cloudlike plush feel might be the first thing you notice once you receive your Puffy, but that's not the only feature that makes our sleep experience so luxurious:
Cool Quilted Cloud Cover
Our Cool Quilted Cloud Cover features breathable yarns that deliver up to 10x superior cooling than standard materials for drier sleep.
Cooling Cloud™ Layer
If you have ever wondered what it's like to sleep on a cool cloud, you can now find out. The Cooling Cloud™ Layer is a gel-infused foam that maximizes air circulation and heat dispersion. The foam structure also cradles your muscles and joints, soothing pressure points to give you the most comfortable sleep in every position.
Discover Why Puffy
Is
America’s #1 Luxury Mattress
sleep quality*
cooler sleep*
back support*
sleepers
*Based on a randomized survey of Puffy mattress owners.
6 (More) Reasons To Choose a Puffy Split King Size Mattress
Why Customers Love Puffy Split King Size Mattresses
Cheri J.
Most Magnificent Mattress Ever!
Jacqueline F.
Puffy Lux Mattress
Alysia R.
Amazing sleep experience
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