CGK Unlimited Extra Deep King Fitted Sheet - Fits 18"-24" Mattress, White Review (2026)

Who needs an 18 to 24 inch pocket sheet

Extra deep pocket sheets exist for one reason: standard king sheets, built for pockets around 12 to 16 inches, pop off the corners of a thick mattress within a night or two. This CGK Unlimited sheet is sized for mattresses 18 to 24 inches deep, which covers most pillow-top king mattresses and any king mattress paired with a foam or latex topper, a common setup in taller households that upgrade to a thicker bed for extra legroom and support. It is sold as a single fitted sheet rather than part of a set, which matters if your current flat sheet and pillowcases already fit your bed and you only need the fitted layer replaced. For anyone starting from scratch, budget for a separate flat sheet and pillowcase set in a matching size and color.

Material and construction explained

CGK Unlimited builds this line from double-brushed microfiber, a fabric treated during manufacturing to resist tearing, shrinking, wrinkling, staining and fading over repeated washes, according to the retailers that carry it. The defining feature is the extra deep pocket itself, cut and sewn to reach 18 to 24 inches from the top of the mattress to the underside, with elastic running the entire way around the hem rather than only at the corners. That full-perimeter elastic is what keeps a deep-pocket sheet anchored under a topper, since corner-only elastic tends to let the middle of the sheet ride up on tall mattress stacks. The sheet is machine washable, and the same CGK Unlimited construction is sold across several colors, including white, black, grey and cream, through Target, Macy's and Amazon.

Living with a deep pocket fitted sheet

Putting a deep-pocket sheet on a tall mattress is easier than it looks: start at one corner, stretch the elastic hem over the opposite corner diagonally, then work the two remaining corners into place before smoothing the middle. Because the elastic runs the full perimeter, the sheet keeps its grip through normal sleeping and pillow-fluffing rather than needing to be re-tucked. White fabric shows stains and general wear faster than a darker colorway, so if you strip and wash bedding infrequently, one of CGK Unlimited's darker shades sold on the same retailer pages may hold its look longer. Wash on a normal cycle and avoid high heat drying, standard care for treated microfiber, to preserve the wrinkle and shrink resistance over time.

Trade-offs and how it compares with other deep pocket king sheets

Against other extra deep king sheets built for the same 18 to 24 inch range, this listing's main trade-off is that it is fitted-sheet-only rather than a full set. Rivals like the Hearth & Harbor extra deep pocket king set bundle a flat sheet and pillowcases along with the fitted sheet, which is more convenient if you are outfitting a bed from zero, though that set scores lower here on fit for the job since its flat sheet and pillowcase sizing matters less than the fitted sheet's grip on a tall mattress. If you already own coordinating flat sheets and pillowcases and just need the fitted layer to stop sliding off a thick mattress, buying only the fitted sheet, as this listing does, avoids paying for pieces you do not need.

Verdict: who should buy this sheet

Buy this if you own a king mattress 18 to 24 inches thick, whether from a pillow top or an added topper, and you specifically need a fitted sheet that will not pop off the corners overnight. It is a strong match for tall households running thicker mattresses for extra support, and our score of 8.7 out of 10 reflects how directly it solves that one problem. Skip it if you are furnishing a bed from scratch and would rather buy a complete set in one purchase, or if white fabric is impractical for your household, in which case the same CGK Unlimited construction is available in several darker colors through the same retailers.

Frequently asked questions