Pillow Protectors and Pillowcase Sizes: A Simple UK Guide
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This pillow protector sizes uk guide will help you choose the right fit. A pillow protector sits between your pillow and its pillowcase. It keeps the pillow cleaner for longer, and the right size means it fits without bunching or slipping.
What Is a Pillow Protector?
A pillow protector is a removable cover that zips or slips over the whole pillow. It guards against sweat, spills, dust and everyday marks, so the pillow itself stays cleaner. Most are machine washable, which makes them much easier to keep fresh than the pillow inside.
Do You Need One?
A protector is worth it if you want your pillows to last longer, if you drink tea in bed, if you have pets, or if you simply prefer a fresher sleeping surface. It is not essential — a pillow works fine without one — but it is one of the cheapest ways to extend a pillow’s life. Wash it as often as you wash your pillowcases.
Types of Pillow Protector
- Cotton protectors: soft, breathable, quiet. A good everyday choice.
- Waterproof protectors: a thin barrier layer stops spills soaking through. Look for one that stays quiet and does not feel plasticky.
- Zipped protectors: fully enclose the pillow, so nothing shifts. Check the zip is covered so it does not snag the pillowcase.
Choose breathable fabrics where you can; a protector that traps heat can make warm sleepers uncomfortable.
Pillow Protector Sizes UK
Match the protector to your pillow’s size, not to your bed size:
- Standard pillow (about 48 x 74 cm, often sold as 50 x 75 cm): Standard protector.
- Superking pillow (50 x 90 cm): Superking protector.
- Square pillow (65 x 65 cm): Square / continental protector.
- Emperor pillow (50 x 100 cm): Emperor protector.
If you are between sizes, size up rather than stretching a protector tight — a strained protector wears faster and can distort the pillow.
Pillowcase Sizes to Match
Pillowcases follow the same sizes. A Standard pillowcase fits a Standard pillow; a Superking case fits a Superking pillow. Check the label before buying: a case that is too small will squeeze the pillow flat, and one that is too large will bunch and crease. If your pillow is 48 x 74 cm, a case labelled 50 x 75 cm will usually fit comfortably.
How to Care for Protectors and Cases
Wash protectors with your bedding, following the care label. Most cotton protectors wash at 40 degrees. Let waterproof protectors dry fully before putting them back on — a damp protector can trap moisture against the pillow. Replace a protector when it thins, tears, or no longer fits snugly.
Frequently Asked Questions
Is a pillow protector the same as a pillowcase?
No. A pillowcase is the decorative outer layer you sleep on. A protector sits underneath it and guards the pillow itself. You use both together.
Can I wash a pillow protector?
Yes, in almost all cases. Follow the care label. Most wash well at 40 degrees and can be tumble dried on low if the label allows.
Do protectors make pillows hot?
Some waterproof protectors can feel warm. Cotton and breathable options are cooler. If you sleep hot, choose a breathable protector and a cotton pillowcase.
We hope this pillow protector sizes uk guide helps you find the perfect fit. A protector and a correctly sized case keep your pillows cleaner, fresher and better shaped. For help choosing the pillow itself, see our pillow buying guide and our pillow sizes guide, or browse the collection.
For a second opinion on this pillow protector sizes uk guide, read independent expert pillow reviews to compare pillow types and sizes side by side.
Related reading: Oxford vs housewife pillowcases | dust mites in pillows