Split California King Sheets

Split California king sheets for Cal king adjustable bases — 5-piece set with two 36 × 84 in. fitted halves, a full Cal king flat sheet and two king pillowcases. Our split California king sheets are 100% premium extra-long-staple cotton, 500 thread count sateen, with 18 in. pockets rated for mattresses up to 18 in. deep including a 3 in. topper. Why split California king sheets are the size nobody stocks This is the size nobody stocks. An adjustable base on a California king frame splits into two halves of 36 × 84 inches — narrower and longer than the twin XL halves a standard split king uses — and standard split king sheets will not cover them. The length is short by four inches at the foot, which on an articulating bed is exactly where the sheet needs the most reach. Split California king sheets exist for the sleepers whose adjustable base does not match any off-the-shelf configuration. Specifications Fitted sheets: Two, each cut for 36 × 84 in. Cal king half Pocket depth: 18 in. — rated for mattresses up to 18 in. deep (mattress + topper combined) Elastic: Full-perimeter on each fitted sheet Flat sheet: Full Cal king width, 110 × 110 in. Pillowcases: Two king cases, 20 × 40 in. Fiber: 100% premium extra-long-staple American cotton Weave: Sateen, 500 thread count Configuration: Fully split (not flex-top) Why full-perimeter elastic is not optional on this size Full-perimeter elastic is not a nicety on a Cal king adjustable base: every time a head section raises, the mattress flexes at the hinge and pulls at the corners, and corner-only elastic gives up first. On split California king sheets the elastic is what keeps the sheet on the mattress across every articulation cycle — corner-only construction fails within weeks on this bed configuration. Why sateen suits an adjustable Cal king Fabric is chosen for enough give to move with the base. A very stiff, low-stretch weave is the wrong specification for a bed that changes shape nightly, however good it feels on a flat mattress. Our premium sateen has natural drape and give that flexes with the articulation rather than fighting it. Split California king sheets size guide PieceDimensions Fitted sheet (×2)Fits 36 × 84 in. Cal king mattress half, 18 in. pocket Flat sheet110 × 110 in. Cal king width Pillowcases (×2)20 × 40 in. king Split top vs flex top vs fully split — measure before ordering Before ordering, measure one half of your own base rather than trusting the retailer’s label — split configurations are described inconsistently across manufacturers, and split top, flex top and fully split are three different products. A flex top keeps the bottom of the sheet joined and splits only the head end; this set is fully split. If your base is flex-top rather than fully split, look for that specific label instead. How to care for your split California king sheets Wash warm on a normal cycle Tumble dry low Fold each fitted sheet by seating the corners inside one another so the elastic keeps its shape Skip fabric softener — softener dulls the sateen luster and reduces breathability Iron on the reverse if a pressed finish is desired; sateen rarely needs it Adjacent configurations On a standard king adjustable base rather than a Cal king, the split king set is the right cut — twin XL halves rather than Cal king halves. For a non-adjustable Cal king, use single-piece California king sheets. Frequently asked questions What are split California king sheets? Split California king sheets are a 5-piece bedding set for Cal king adjustable bases, where the mattress is two independent 36 × 84 in. halves. Includes two fitted halves, one full-width flat, and two king pillowcases. Do split California king sheets fit a standard king adjustable base? No — standard king adjustable halves are 38 × 80 in. twin XL. Use the split king set instead. Is split California king the same as split king? No. Split king halves are twin XL (38 × 80 in.); split Cal king halves are 36 × 84 in. — narrower and longer. These are not interchangeable. Do split California king sheets fit flex-top mattresses? No — flex top splits only the head end. Our set is fully split (two independent fitted sheets). For flex top, look for that specific configuration. Complete the Cal king adjustable bed Layer with a matching Cal king duvet cover, coordinated king pillowcases and a lightweight cotton quilt. Browse the full bed sheets collection for related configurations.