Split Cal King Bamboo Sheets — Cooling Viscose for Adjustable Beds
Split Cal King bamboo sheets are sized for a Cal King adjustable base that splits into two independent 36″-wide × 84″-long halves — Bamboo Is Better's Signature Sheet Set in Split Cal King is viscose from bamboo, OEKO-TEX Standard 100 certified, tested to sleep up to 3× cooler than cotton, and priced at $309 with free shipping. Four inches longer than a Split King and cut for taller sleepers, each half adjusts on its own so neither side untucks when one of you raises the head. Backed by 251 reviews at 4.91★, a 30-night sleep trial, free shipping, and a 1-year warranty.
Shop Split Cal King Bamboo Sheets — $309 →
Why a one-piece Cal King sheet doesn't work on a Split Cal King base
A Split Cal King adjustable base is really two separate Cal King halves, side by side — each raises, lowers, and articulates on its own. A standard one-piece Cal King fitted sheet stretches across both halves as if they were a single mattress, so the first time either side moves, the sheet binds, drags, and pops a corner. A true Split Cal King sheet set solves this at the source: it ships as two independent 36″×84″ pieces, one per side, each cut and stitched to move with its own half of the base.
What's in a Split Cal King bamboo sheet set
- Two fitted sheets — one per 36″ × 84″ Cal King half, 15″ deep pocket with corner straps that secure mattresses up to 18″ deep (covers the thicker mattresses common on adjustable bases)
- One cal king-size flat sheet — spans the full width so the top of the bed still reads as one bed, not two
- Two pillowcases — standard/queen sized, same viscose-from-bamboo fabric
If you're not sure which split size your base takes, our specialty size guide compares the fit, dimensions, and independent-sides differences across all four split sizes.
Why bamboo on an adjustable base
- Up to 3× cooler than cotton — adjustable-base sleepers are disproportionately hot sleepers (elevating the head traps heat against the neck and shoulders); viscose from bamboo wicks moisture and breathes where cotton holds both in.
- OEKO-TEX Standard 100 certified — independently tested for 100+ harmful substances, certificate available on request. See our OEKO-TEX certification page.
- Most sheet brands stop at standard Cal King and never cut a split version. Bamboo Is Better stocks Split Cal King at full depth, in every core color.
Split Cal King vs. the other split sizes
| Size | Fits | Price |
|---|---|---|
| Split King | King adjustable base, two Twin XL halves — the most common configuration | $309 |
| Split Cal King | Cal King adjustable base, for taller sleepers (6′2″+) | $309 |
| Top Split King | King base where only the head articulates — one-piece foot | $369 |
| Split Queen | Queen adjustable base — smaller rooms | $289 |
Not sure which one your base takes? The full breakdown — dimensions, independent-sides comparison, and a picker — is on our specialty size guide. If you're pairing sheets with a new adjustable base, see adjustable bases.
What hot sleepers say
★★★★★ "Super soft and comfortable. Great customer service. I run hot, and these sheets are great at cooling. I would definitely and have bought again and again"
— Oscar, verified buyer
★★★★★ "These sheets are the softest I’ve ever slept on. The quality is amazing and they’re so beautiful! Silky smooth and get better with ever wash!"
— Kelby M., verified buyer (Seattle)
★ 4.91 · 251 reviews · OEKO-TEX Certified · 100,000+ customers · 30-night trial
Frequently asked questions
What size sheets do I need for a Split Cal King adjustable base?
Split Cal King bamboo sheets: two independent fitted sheets, one per 36″×84″ Cal King half, under one shared cal king-size flat sheet, plus two standard pillowcases.
What's the difference between Split King and Split Cal King?
Split Cal King is four inches longer (84″ vs 80″) but two inches narrower per side (36″ vs 38″), and it requires a Cal King adjustable base. Split King is the more common size; Split Cal King is built for taller sleepers, roughly 6′2″ and up.
Will a regular Cal King sheet set work on a Split Cal King base?
Not well. A one-piece Cal King fitted sheet spans both halves as if they were one mattress, so it binds and pops loose the first time either side of the base moves independently. Split Cal King sheets solve this with two separate fitted pieces.
Are Split Cal King bamboo sheets cooler than cotton?
Yes. The same viscose-from-bamboo fabric as the full-size Signature line, tested to sleep up to 3× cooler than cotton, moisture-wicking and OEKO-TEX Standard 100 certified.
How much do Split Cal King bamboo sheets cost?
Bamboo Is Better's Split Cal King Signature Sheet Set is $309, with free U.S. shipping, a 30-night sleep trial, and a 1-year warranty.
Do Split Cal King sheets fit deep adjustable mattresses?
Yes. Each fitted half has a 15″ pocket with corner straps that secure mattresses up to 18″ deep, which covers the thicker mattresses common on adjustable bases.
Two sides. Two sleep temperatures. One bed that finally stays cool.
Shop Split Cal King Bamboo Sheets — $309 Compare all split sizes → Full adjustable-bed sheet guide →