Sei Fitted Sheet

Name: Sei Fitted Sheet - Clearance 60
Brand: MATTEO
SKU: 168212X6

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

$110.00 ~~$275.00~~

Size:

King

Cal King

Queen

Full

Twin

Twin XL

Quantity:

Variant

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

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. All products purchased at 50% to 70% off can be returned for a full refund or store credit. All products purchased at 80% to 90% off can only be returned for store credit. All returns involving a MATTEOX product are subject to a $10 restocking fee.

Frequently Asked Questions

What fabric is the Sei Fitted Sheet made from, and what does 600 thread count actually mean?

The Sei Fitted Sheet is 100% cotton in a sateen weave with a 600 thread count, making it MATTEO's highest thread count fabric. Thread count measures weave density: count the individual yarns in one square inch of fabric and that number is the thread count. It does not account for yarn quality, softness, or weave balance, which is why MATTEO has stayed at 600 TC rather than going higher. Higher thread counts typically produce a stiffer, less breathable fabric; Sei at 600 TC sits at the point where density and drape are in balance.

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. The elastic band spans the full perimeter of the sheet and is encased in the bottom seam with a high-density stitch, so it holds its position through repeated washing and use. Corners are finished with a flat felled seam tacked at the top corner, reinforcing the areas that take the most wear. Size dimensions are: King 78 x 80 x 16 in, Cal-King 72 x 84 x 16 in, Queen 60 x 80 x 16 in, Full 54 x 75 x 16 in, and Twin 39 x 75 x 16 in.

Is the Sei Fitted Sheet suitable for people with sensitive skin?

The Sei Fitted Sheet is garment-washed 100% cotton, which removes surface stiffness before the sheet reaches you. Garment-dyed colorways use reactive dyes; MATTEO does not use chlorine bleach, alpha hydroxy acids, or benzoyl peroxide in its dyeing process. The sateen weave puts the smoother face of the fabric against your skin, which is what gives Sei its silk-like hand feel. For those who react to synthetic finishes or harsh dye chemicals, the garment-washing process and non-toxic dye approach are relevant considerations.

How does sateen weave differ from percale, and which should I choose?

A sateen weave has a four-over, one-under thread structure that puts more yarn surface on the face of the fabric, producing the smooth, slightly lustrous finish Sei is known for. Percale uses a one-over, one-under structure that creates a matte, crisp feel with more airflow. Sei's 600 TC sateen is the right choice if you want a silky, substantial sheet with a refined drape; if you prefer a crisper, lighter hand, MATTEO's Tru Fitted Sheet in percale is worth comparing. Both are 100% cotton and garment-washed.

How does the Sei Fitted Sheet hold up to repeated washing?

The full-perimeter elastic is encased in the bottom seam with a high-density stitch specifically to retain strength through a lifetime of washing and use. The flat felled corner seam, tacked at the top corner, protects the weaker edges of the fabric where wear concentrates first. Wash in lukewarm water with a gentle detergent and a cool rinse; tumble dry on low heat and remove promptly to reduce wrinkling. Line drying gives the best long-term result for the cotton fibers.

What colors does the Sei Fitted Sheet come in?

The Sei Fitted Sheet is available in White, Off White, Moon, Greige, Salt, Oat, Mica, Iris, Bay, Alpine, Coal, Fig, Bark, Night, and Smoke. The garment-dyeing process is an art rather than a precise science, so a shade variation of plus or minus 10% between dye lots is normal and expected. If you are ordering multiple pieces to match closely, ordering at the same time from the same dye lot is recommended. Learn more about MATTEO's garment-dyeing process.

How does the Sei Fitted Sheet compare to hotel-quality cotton sheets?

Hotel programs typically specify long-staple cotton in sateen or percale weaves at 300 to 600 thread count, prioritizing durability and a smooth hand that holds up through industrial laundering. The Sei Fitted Sheet is 100% cotton, 600 TC sateen, garment-washed, and constructed with a flat felled corner seam and full-perimeter elastic, all structural details associated with high-use, high-durability bedding. The elastic encasement in the bottom seam is specifically designed to retain strength through a lifetime of washing. Designed and manufactured by MATTEO in Los Angeles, Sei sits at the upper end of luxury cotton bedding rather than the accessible-commercial tier most hotel programs buy.

Can I pair the Sei Fitted Sheet with other MATTEO bedding?

The Sei Fitted Sheet works well with the full Sei Fabric Collection, which includes pillowcases and flat sheets in the same 600 TC cotton sateen. For a layered bed with varied textures, Sei pairs cleanly with MATTEO's linen or matelasse pieces, since its neutral color range from White through Coal coordinates across collections. Interior designers ordering for client projects can request fabric swatches to verify color and hand feel before committing to a full set.