What Size Is a Super King Pillowcase

Standard Super King Pillowcase Dimensions

A super king pillowcase fits a super king pillow. Manufacturers also call this size a king pillowcase in some regions. The name varies by market. The dimensions stay consistent.

Most brands use the following measurements:

• Width: 20 inches (51 cm)
• Length: 36 inches (91 cm)

Some brands add extra length. Some brands add a wider hem. The usable space still matches the pillow size.

A super king pillowcase must cover the full pillow. The case must allow easy insertion. The case must allow smooth movement during sleep.

Super King Pillowcase Size Compared to Other Pillowcases

Different pillow sizes require different cases. Size mismatch causes fabric strain. Size mismatch causes loose fabric folds. Correct sizing improves comfort and durability.

Pillowcase Size Comparison Table

Pillow Type	Pillowcase Width	Pillowcase Length	Common Name
Standard	20 inches	26 inches	Standard
Queen	20 inches	30 inches	Queen
King	20 inches	36 inches	King
Super King	20 inches	36–38 inches	Super King

Most retailers group king and super king pillowcases together. The difference often appears in branding rather than cut.

History of the Super King Pillowcase

Bed sizes expanded during the twentieth century. Mattress width increased. Pillow length followed the change.

Hotels first adopted king pillows. Guests requested more shoulder support. Manufacturers responded with longer pillows.

Retail bedding brands later adopted the size. Marketing teams added the term super king to signal luxury. The dimensions stayed similar to standard king sizes.

Modern bedding stores still use both names. The cut remains consistent across most regions.

Technical Specifications That Define a Super King Pillowcase

A super king pillowcase uses specific construction details. These features control fit and comfort.

Fabric Cut and Seam Allowance

Manufacturers cut extra fabric for seams. The seam allowance usually measures 0.5 to 1 inch. This allowance does not affect internal space.

A quality pillowcase uses straight seams. Straight seams prevent fabric twist.

Closure Types

Common closure styles include:

• Open end: Allows fast pillow insertion
• Envelope closure: Uses overlapping fabric flaps
• Zipper closure: Secures the pillow fully

Envelope closures suit active sleepers. Zipper closures suit decorative use.

Hem Width

A wide hem improves structure. A hem also adds visual balance.

Common hem widths include:

• 2 inches
• 3 inches
• 4 inches

A wider hem shortens usable length slightly. Brands adjust the cut to compensate.

Why Super King Pillowcases Exist

Super king pillows support the full width of the shoulders. Side sleepers prefer this size. Combination sleepers prefer this size.

A longer pillow prevents neck drop. A longer pillow supports arm placement. The pillowcase must match the pillow length.

A short case compresses the fill. Compression reduces loft. Reduced loft affects spinal alignment.

Benefits of Using the Correct Super King Pillowcase Size

Correct sizing improves sleep quality. Correct sizing protects fabric and fill.

Key benefits include:

• Even fabric tension: Prevents seam stress
• Full coverage: Stops pillow exposure
• Stable fit: Reduces bunching
• Longer lifespan: Limits fabric wear

A fitted case also improves visual symmetry on the bed.

Materials Commonly Used for Super King Pillowcases

Fabric choice affects feel and care. The size stays the same across materials.

Cotton Pillowcases

Cotton offers breathability. Cotton suits warm sleepers.

Common cotton types include:

• Percale
• Sateen
• Organic cotton

Thread count does not change size. Weave affects texture.

Linen Pillowcases

Linen uses flax fibers. Linen feels crisp at first. Linen softens with use.

Linen pillowcases often shrink slightly. Manufacturers pre-wash fabric to control size.

Bamboo and Viscose Pillowcases

Bamboo-derived fabrics feel smooth. These fabrics regulate temperature well.

Manufacturers often add stretch. Stretch helps with fit tolerance.

Silk Pillowcases

Silk reduces friction. Silk protects hair and skin.

Silk pillowcases use precise cuts. Silk lacks stretch. Correct sizing matters more.

How to Measure a Super King Pillowcase at Home

Measurement ensures correct replacement. Measurement also helps with custom orders.

Follow these steps:

1. Lay the pillowcase flat.
2. Smooth the fabric by hand.
3. Measure width from seam to seam.
4. Measure length from opening to closed end.

Ignore decorative hems during measurement. Focus on internal space.

Super King Pillowcase Fit Issues and Solutions

Fit problems occur due to labeling differences. Brands vary by region.

Pillowcase Feels Too Short

Causes include:

• Incorrect labeling
• Oversized pillow fill
• Shrinkage after washing

Solutions include:

• Use king-sized cases with extra length
• Choose envelope closures
• Avoid high heat drying

Pillowcase Feels Too Loose

Loose fabric causes wrinkles. Wrinkles affect comfort.

Solutions include:

• Choose zippered cases
• Use thicker pillow inserts
• Select fabrics with less drape

Regional Naming Differences

Naming varies by country. Size usually stays constant.

• United States: King or Super King
• United Kingdom: King
• Australia: King

Retail listings may use different terms. Always check dimensions.

Super King Pillowcases and Bed Styling

A super king pillowcase affects bed appearance. Longer pillows create visual width.

Designers often place super king pillows at the back. Standard pillows sit in front.

This layout creates depth. This layout balances large mattresses.

Neutral colors highlight size. Bold prints emphasize shape.

Care and Maintenance for Super King Pillowcases

Proper care preserves size and texture. Care rules vary by fabric.

Washing Guidelines

General care steps include:

• Wash in cold or warm water
• Use mild detergent
• Avoid fabric softeners

Hot water increases shrink risk.

Drying Guidelines

Air drying preserves length. Low heat drying reduces damage.

Remove cases promptly. Prompt removal reduces wrinkles.

Ironing and Steaming

Ironing smooths hems. Steaming relaxes fibers.

Always check fabric labels before heat use.

Shrinkage and Size Stability

Shrinkage affects cotton and linen most. Pre-washed fabrics reduce risk.

Expected shrinkage ranges include:

• Cotton: 3–5%
• Linen: 4–7%
• Bamboo blends: under 3%

Manufacturers account for shrinkage during cutting.

Super King Pillowcases for Adjustable Beds

Adjustable beds use flexible frames. Pillows move more on these beds.

Envelope closures help retain position. Zippers provide full control.

Fabric stretch also improves performance.

Buying Super King Pillowcases Online

Online listings vary in clarity. Dimensions matter more than names.

Check these details before purchase:

• Listed measurements
• Fabric composition
• Closure type
• Return policy

Reviews often mention fit accuracy.

Retailers like lululinens.com list dimensions clearly. Clear listings reduce sizing errors.

Common Myths About Super King Pillowcases

Several myths confuse buyers.

Myth: Super King Means Custom Size

Reality: Super king follows standard dimensions.

Myth: All King Pillowcases Fit the Same

Reality: Length varies by brand.

Myth: Thread Count Changes Size

Reality: Thread count affects feel, not dimensions.

Who Should Use Super King Pillowcases

Certain sleepers benefit most from this size.

Ideal users include:

• Side sleepers
• Broad-shouldered sleepers
• Couples sharing pillows
• Decorative bed stylists

Travelers often skip this size due to bulk.

Environmental Impact of Larger Pillowcases

Larger cases use more fabric. Fabric choice affects sustainability.

Organic cotton reduces chemical use. Linen uses less water than cotton.

Durable cases reduce replacement frequency.

How Super King Pillowcases Affect Pillow Longevity

A proper case protects the pillow core. Protection reduces friction and compression.

Loose cases cause internal shifting. Tight cases strain seams.

Correct sizing maintains fill structure.

Step-by-Step Guide to Choosing the Right Super King Pillowcase

Follow a clear process.

1. Measure the pillow length and width.
2. Confirm internal case dimensions.
3. Choose a fabric based on sleep temperature.
4. Select a closure style.
5. Review care requirements.

This process reduces returns and improves comfort.

Summary: What Size Is a Super King Pillowcase

A super king pillowcase measures 20 inches by 36 inches in most markets. Some versions extend to 38 inches for added ease.

The size supports longer pillows. The size improves shoulder and neck alignment. The size enhances bed presentation.

Correct measurement matters more than name. Fabric choice affects feel, not fit. Proper care preserves dimensions.

A well-sized super king pillowcase improves sleep comfort and bedding longevity.