A weighted blanket cover is a removable, duvet-style cover that protects the blanket, changes how it feels against your skin, and lets you wash the outer layer without laundering the heavy inner blanket. Most weighted blankets need one. I have fitted and washed a lot of them, so this is the practical guide — what a cover does, which fabric to pick, how to size it, and how to keep it clean.

What is a weighted blanket cover?

The cover is not the weighted part. The weight sits in the inner blanket, held in stitched pockets. The cover is the layer your skin touches and the layer you wash. Some weighted blankets are sold as one sealed piece. Many are sold as an inner blanket plus a removable cover, and the cover is where you decide feel and temperature.

Do you need a cover for a weighted blanket?

Usually, yes. There are two practical reasons.

The first is washing. A weighted blanket is heavy and slow to dry, and washing it often shortens its life. A cover means you launder a light layer regularly and the heavy inner blanket rarely.

The second is feel. The cover decides whether the blanket feels crisp or plush, cool or warm. If your blanket is a sealed all-in-one design, you do not add a cover. If it is an inner blanket meant to sit inside one, use it.

What fabric is best for a weighted blanket cover?

There is no single best fabric. There is a best fabric for your room and your sleep temperature. Here is how the common options compare.

Minky and fleece are not the wrong choice — they are the winter choice. Linen and bamboo are the warm-weather side of the same decision. Pick the one that matches your room. A linen cover is the usual pick for anyone who runs hot. If your current blanket already sleeps warm, the cause is usually the fill and cover fabric together — I go through the fixes in why is my weighted blanket too hot?

How do you stop the blanket shifting inside the cover?

Movement inside the cover is the most common complaint, and it is avoidable. Look for ties at all four corners at minimum, and ideally at the mid-sides too. Tie every one of them to the matching loop on the blanket. A full-length zip or button closure along one side keeps the opening flat and closed.

What size cover fits a weighted blanket?

Match the cover to the blanket's measurements, not to your bed. A weighted blanket is smaller than a standard duvet, so a duvet cover in your bed size will usually be too large and let the blanket slide.

Common weighted blanket sizes are 135×200 cm, 150×200 cm and 200×220 cm. Check the blanket's stated dimensions and buy the cover that matches them. If you are between two sizes, choose the one closer to the blanket, not the larger one.

How do you wash a weighted blanket cover?

The cover is the easy part, which is the whole point of having one. Take the inner blanket out first. Wash the cover on a cold, gentle cycle with a mild detergent. Skip fabric softener — it coats the fibres and reduces breathability, which matters most on cooling fabrics. Dry on low heat or line dry.

A sensible rhythm is to wash the cover roughly as often as your sheets, and the heavy inner blanket only occasionally.

Cotton or linen cover — which should you choose?

Both breathe well, so this comes down to feel, room temperature and budget.

A cotton cover is crisp, consistent and lower cost, with simple care. It is the reliable all-rounder. A linen cover is cooler and more textured, breathes better in a warm room, and softens the longer you own it, at a higher price.

If you sleep hot or your bedroom runs warm, choose linen. If you want the simple, lower-cost option that works all year, choose cotton.

Frequently asked questions

Do all weighted blankets come with a cover?
No. Some are a single sealed piece; many are sold as an inner blanket plus a separate, washable cover. Check before buying if easy washing matters to you.

Can you use a weighted blanket without a cover?
Yes, if it is a sealed all-in-one design. If it is an inner blanket meant to sit inside a cover, use one — it protects the fill and is far easier to clean.

How do you keep the blanket from moving inside the cover?
Tie the blanket's loops to the cover's inner ties at every corner and side, and use a cover with a full-length closure.

What size cover do I need?
Match the cover to the weighted blanket's measurements, not the bed. Between sizes, pick the one closest to the blanket.

Can you machine wash a weighted blanket cover?
Yes. Remove the inner blanket, wash cold on a gentle cycle with mild detergent, skip fabric softener, and dry on low.

Is cotton or linen better for a cover?
Both breathe well. Choose linen for warm rooms and hot sleepers, cotton for a simple, lower-cost year-round option.