Extra Deep Split King Fitted Sheet - Fits 18"-24" Mattress, Yellow Review (2026)

Who this fitted sheet is for

This listing is a single fitted sheet cut for a Split King mattress, which is the two-piece mattress arrangement used with adjustable bed bases that let each side raise and lower independently. According to the Amazon listing, it fits mattresses from 18 to 24 inches deep, matching the thicker mattresses commonly paired with modern adjustable frames. Because Split King uses two separate mattress halves rather than one continuous King mattress, this sheet is only useful to someone who owns that specific setup, not a standard King bed, and buyers should double check their frame type before ordering since a standard King fitted sheet will not properly cover a Split King arrangement. It ships as one fitted sheet only, so it assumes the buyer already has a flat sheet and pillowcases on hand.

Fabric and fit details

The listing describes a double brushed fabric with elastic running the full perimeter of the sheet, designed to grip a deep mattress corner without slipping loose, and it is marketed as resistant to tearing, shrinking, wrinkling, staining, and fading through normal machine washing. As with similar unbranded deep pocket sheets, the exact fiber content is not specified on the listing, so buyers should not assume this is cotton without confirming with the seller first. The 18 to 24 inch pocket depth is on the deeper end of what is available for Split King sheets, which matters because a shallow pocket sheet stretched over a mattress plus topper combination tends to pop off the corners during normal use, especially on the moving sections of an adjustable base.

Living with it day to day

Because Split King mattresses sit on independently moving bases, a fitted sheet needs enough give in the elastic to handle the mattress flexing as each side raises or lowers, and the full-perimeter elastic design here is aimed at that specific stress rather than just a flat, stationary bed. Machine washing on a normal cycle should be fine given the manufacturer's stated resistance to shrinking and wrinkling, though as with any unbranded microfiber-style sheet, washing in cooler water and avoiding high heat drying will extend the life of the elastic over repeated cycles. The bright yellow color is a bold accent choice rather than a neutral one, so it works best as an intentional pop of color against white, gray, or navy bedding rather than as a default replacement sheet.

Trade-offs and how it compares

This sheet sits at the bottom of the Split King and extra deep King category covered in this guide, ranked behind the CGK Unlimited Extra Deep King Fitted Sheet, the Hearth and Harbor six piece set, and the Extra Deep Split King Fitted Sheet in cream also covered here. The main trade-off next to those higher-ranked options is the same unbranded, unspecified fabric issue seen across this style of generic deep pocket sheet, plus a bold color that will not suit every bedroom the way a neutral tone would. Where it can still make sense is as an inexpensive, functional fix for a specific Split King fitting problem when a buyer already has flat sheets and pillowcases and just needs the bottom layer replaced without matching an exact color scheme.

Verdict and who should pick something else

This is a narrowly useful sheet that solves one specific problem, fitting a deep Split King mattress on an adjustable base, and it does that job adequately without extra frills. Our score of 7.1 out of 10 reflects solid fit for the job, weighed against below-average build clarity and a bold color that limits how many bedrooms it will actually suit. Anyone with a standard King mattress rather than a true Split King setup should skip this listing entirely, and buyers wanting documented fabric quality or a fuller set should look at the CGK Unlimited or Hearth and Harbor options ranked above it in this guide.

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