• Mica Light Grey Sei Cotton Fitted Sheet with Pillow Shams - Top View | MATTEO
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Sei Fitted Sheet

Sei Fitted Sheet

100% Cotton | 600 Thread Count | Sateen Weave | Garment-Dyed

$69
$345 $69
FINAL SALE Sold out

MATTEOX Exclusive, 40% discount auto-applies at checkout.

Color Mica Taupe
Size Size guide

Description

Our fitted sheets feature a strong elastic band that spans the entire sheet. The elastic band is encased in the bottom seam with a high density stitch to ensure that it retains strength through a lifetime of washing and use.

The 16" pockets on our fitted sheets are finished with a flat felled seam that is tacked down at the top corner. This protects the weaker edges of the fabric and reinforces the corners that receive the highest amount of wear. Our fitted sheets will fit mattresses up to 20" deep comfortably.

  • 100% cotton
  • Sateen weave
  • 600 thread count
  • Garment-washed

Related Searches
Sei Fabric Collection, Nap Fitted Sheet, Washed Sateen Flat Sheet, Vintage Linen Fitted Sheet, Tru Fitted Sheet, Sei Pillowcase Single, 600 Thread Count Cotton Fabric

Fabric

Sei is our highest thread count fabric at 600 TC. We are not myopically focused on thread count at MATTEO. Thread count is one among many measurements of quality in the world of bed linens. The most simple definition of thread count is to take a pair of scissors and cut out a square inch of fabric and count each individual yarn (or thread). This is the thread count and, as such, thread count is simply a definition of the density of the weave. It does not take into consideration the softness of the raw cotton used or the size and smoothness of the yarn, nor does it measure the balance of the weave. Focusing only only thread count is similar to deciding which beer to drink by only measuring its alcohol content.

We have not yet gone above 600 thread count at MATTEO because higher counts typically produce a stiff and dense fabric that does not move or breathe. All sateens (or satin) fabrics have a face which is softer and a backside which is rougher. This is what creates the "silky" feel that customers love so much. And our customers love Sei because it is one of the purest, softest, and silkiest fabrics on the market.

Care Details

Wash

Wash should be separated into light & dark colors. Do not overload machine as this will damage long cotton fibers. We recommend a lukewarm wash cycle with a gentle detergent & a cool rinse.

Bleach may be used on white cotton bed linens only. Avoid using products that contain whitening agents such as chlorine bleach, alpha hydroxy acids and benzoyl peroxide on garment-dyed items. The reactive dyes used for garment-dyeing are not resistant to these whitening agents.

The largest challenge with garment-dyeing is the truth that it is an art, and not a science. We must allow for a shade variation of +/- 10% from dye-lot to dye-lot.

Learn more about Garment-Dyeing.

Drying

Tumble dry with low heat.Remove bed linens promptly from the machine to reduce wrinkling. For best results, line dry.

Ironing

We at MATTEO tend to prefer a lived-in look, as such, you don't find us ironing our sheets too frequently. If you prefer a crisp looking bed, our cotton bed linens should be pressed while slightly damp using the Lightweight Cotton or Medium setting.

Size
inches cm
King 78 x 80 x 16 198 x 203 x 41
Cal-King 72 x 84 x 16 183 x 213 x 41
Queen 60 x 80 x 16 152 x 203 x 41
Full 54 x 75 x 16 137 x 191 x 41
Twin 39 x 75 x 16 99 x 191 x 41

Important Notice

All products purchased from the MATTEOX clearance page are samples that might exhibit visible flaws, including, but not limited to, off-color shades, incorrect threads, and faded edges. Products purchased in the same color might be different tones owing to differences from their respective dye lots. Products purchased at 50% off are eligible for a full refund. Products purchased at 60% off are only eligible for exchanges or store credit. Products purchased at 80% off or below are FINAL SALE.

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Frequently asked questions

What fabric is the Sei Fitted Sheet made from?
The Sei Fitted Sheet is 100% cotton in a sateen weave, garment-washed to a 600 thread count. Sei is MATTEO's highest thread count fabric, woven with 120/2 Ne yarn in both warp and weft, which gives the face of the sheet its characteristic silky hand. The garment-washing process softens the fabric before it reaches you, so it arrives ready to use rather than stiff from finishing.

Is 600 thread count actually better than a lower thread count?
Thread count measures only the density of the weave; it says nothing about the quality of the raw cotton, the yarn size, or the balance of the construction. MATTEO has not gone above 600 thread count because counts beyond that typically produce a heavy, dense fabric that does not breathe or move well. Sei reaches 600 TC without those trade-offs because the yarn quality and weave balance were prioritized alongside density. A well-constructed 400 TC sheet in long-staple cotton will outperform a poorly made 1,000 TC sheet.

Will the Sei Fitted Sheet fit a deep mattress?
The Sei Fitted Sheet has 16-inch pockets and fits mattresses up to 20 inches deep. Each corner is finished with a flat felled seam tacked at the top corner to reinforce the areas that take the most stress during fitting. The elastic band spans the entire perimeter of the sheet and is encased in a high-density stitch, so it holds its tension through repeated washing.

What sizes does the Sei Fitted Sheet come in?
The Sei Fitted Sheet is available in Twin (39 x 75 x 16 in.), Twin XL, Full (54 x 75 x 16 in.), Queen (60 x 80 x 16 in.), King (78 x 80 x 16 in.), and California King (72 x 84 x 16 in.). All dimensions include the 16-inch pocket depth. If you are pairing with a flat sheet or pillowcases, the full Sei collection is available at matteola.com/collections/sei.

How should I wash and care for the Sei Fitted Sheet?
Wash the Sei Fitted Sheet in lukewarm water with a gentle detergent, separating light and dark colors. Do not overload the machine, as this puts stress on the long cotton fibers. Tumble dry on low heat and remove promptly to reduce wrinkling; line drying gives the best results. For garment-dyed colorways, avoid chlorine bleach, alpha hydroxy acids, and benzoyl peroxide, as the reactive dyes are not resistant to those whitening agents.

What is garment-washing and how does it affect the feel of the Sei Fitted Sheet?
Garment-washing means the finished sheet is washed as a complete product rather than treating the fabric before construction. This process relaxes the fibers and breaks in the hand of the cloth, so the sheet arrives soft rather than requiring multiple home washes to reach its best feel. It also produces a slight dimensional variation in texture that gives MATTEO cotton its lived-in quality. You can read more about MATTEO's garment-dyeing process at matteola.com/garment-dyeing.

How does the Sei Fitted Sheet compare to MATTEO's other cotton fitted sheets?
Sei is MATTEO's highest thread count cotton, at 600 TC in a sateen weave, with a silky, smooth face and a slightly heavier hand. The Tru Fitted Sheet is a percale weave with a crisper, matte finish and a lighter weight, which many hot sleepers prefer. The Nap Fitted Sheet offers a different texture and weight for those who prefer a more relaxed cotton feel. If you want to compare fabrics before ordering, MATTEO's 600 Thread Count Cotton Fabric swatch is available separately.

Is the Sei Fitted Sheet a good choice for sensitive skin?
The Sei Fitted Sheet is 100% cotton with no synthetic blends, and it is dyed using non-toxic reactive dyes. The garment-washing process removes residual finishing chemicals before the sheet reaches you, which reduces potential irritants common in untreated fabrics. The sateen weave places the smoothest face of the cloth against the skin, minimizing surface friction. Those with particularly reactive skin should wash the sheet once before first use with a fragrance-free detergent.