California Design Den King Sheet Set 400 Thread Count

The smooth cotton sateen weave is the standout here: it gives these California Design Den king sheets a soft feel while keeping the fabric lightweight and breathable. The two-pack uses single-ply, 100% long-staple cotton, and each set includes a fitted sheet, a flat sheet, and two pillowcases. Indigo Dusty Blue has soft gray undertones, making it a quieter blue than a vivid navy or purple shade. For everyday bedding, the appeal is a familiar cotton feel with details aimed at making bed-making and laundry less of a hassle.

Getting the most from it

The fitted sheets have all-around elastic and are designed for mattresses from 8 to 16 inches deep. That range is useful if your mattress is deeper than a basic fitted sheet can handle, though fit still depends on the actual mattress depth. Top-and-bottom tags help orient the sheet when you’re making the bed, they’re a small practical touch when you’re stretching it over the corners.

Across the two sets, you get two flat sheets, two fitted sheets, and four open-end pillowcases sized for king pillows. The stated finished dimensions are 112 by 102 inches for each flat sheet, 78 by 80 inches for each fitted sheet, and 21 by 40 inches for each pillowcase. For routine care, machine wash warm and tumble dry low. Removing the sheets promptly is recommended to help reduce wrinkles, so they may not suit someone who wants to leave laundry in the dryer and put it straight on the bed later.

Why it’s worth it

The 400 thread count is independently verified, with a stated variance of plus or minus 5%, and the sheets have been tested for pilling, fading, and shrinkage. That gives buyers more concrete information than a thread-count claim alone, though it does not guarantee how the fabric will look after every household’s laundry routine. The maker says the cotton can soften with each wash, and the Good Housekeeping Seal reflects independent testing.

If you prioritize a smooth, lightweight cotton feel and a spare set ready for laundry day, this two-pack offers a more complete rotation than buying only one set. If you prefer a heavier-feeling sheet or need a fit outside the stated mattress-depth range, another fabric or fitted-sheet specification may be a better match. From the way it is set up, the strongest everyday benefit is having matching king bedding ready to switch in without changing the color or feel of the bed.

Key takeaways

You’ll appreciate it if you want breathable cotton sateen, two coordinated sets, and fitted-sheet elastic around the edges. The 100% long-staple cotton construction and the Indigo Dusty Blue color are the main draws, while the orientation tags help with a quick bed change. Better avoided if you want a no-wrinkle finish without prompt dryer removal, or if your mattress is shallower than 8 inches or deeper than 16 inches, the listed fit range does not cover those sizes.

Should you buy it?

Choose this set if you’re outfitting a king bed and value a soft, breathable cotton surface, a second set for rotation, and a fitted sheet made for mattresses up to 16 inches deep. It also makes sense if you like a muted blue rather than a more saturated shade. Skip it if your priority is a heavier fabric, a different color, or a mattress depth beyond the stated range. The practical decision comes down to whether its cotton sateen feel and laundry routine suit your bed—not just whether the 400 thread count sounds appealing.