A Sleep Heavy guide
How to Wash a Sleep Heavy Blanket, Cover and Pillowcase
To wash a Sleep Heavy cotton, mink or bamboo blanket, take off the removable cover, machine wash it on a gentle cycle and air dry it, and if you want to wash the weighted insert, hand wash it in cold water and air dry it.
To wash a Sleep Heavy cotton, mink or bamboo blanket, take off the removable cover, machine wash it on a gentle cycle and air dry it, and if you want to wash the weighted insert, hand wash it in cold water and air dry it. The chunky knit and the silk pillowcase have their own rules, which we cover below. The American Academy of Pediatrics advises against weighted blankets for babies, so ask Sleep Heavy about its age guidance before you use one with a child. Our Sleep Heavy discount code page lists the current code and how to use it.
Take the cover off first
Sleep Heavy’s cotton, mink and bamboo blankets are two parts: an inner insert filled with fine-grade glass beads, and an outer cover. Sleep Heavy says the cover and insert are held together with rope ties, and that a zipping system lets you remove the cover for washing.
- Lay the blanket flat, open the zip and undo the ties that hold the insert in place.
- Slide the insert out. It carries almost all of the weight, so lift it with care.
- Wash the cover on its own, and only wash the insert when it actually needs it.
Washing the cover and the insert
For the cotton weighted blanket, the mink weighted blanket and the bamboo blanket, Sleep Heavy gives the same care instructions:
- Cover: removable and machine washable. Use a gentle cycle and air dry.
- Insert: hand wash with cold water and air dry.
An insert full of glass beads holds a lot of water, so give it plenty of time to dry all the way through before you put the cover back on. Refitting a damp insert traps moisture inside the cover. A clean, dry blanket also matters for Sleep Heavy’s policies: returns must be clean with no debris or pet fur, and its warranty does not cover stains or soiled blankets.
The chunky knit is different
The chunky knit weighted blanket has no separate cover. Sleep Heavy says it is hand woven from 100% cotton with no synthetic fillings, so you wash the whole blanket. Its care instructions are:
- Hand wash, or use a gentle warm machine wash in cool water (30 degrees Celsius).
- Wash it on its own on a delicate or permanent press cycle.
- Make sure your washing machine can handle the weight of the blanket before you try.
- Do not hang it to dry. Dry it flat, or tumble dry on low for 2 to 3 drying cycles.
Sleep Heavy puts the no hanging rule down to the chunky knit structure, so lay it flat on a clean surface or use the dryer on low as it describes.
Caring for the silk pillowcase
Sleep Heavy’s 19 momme mulberry silk pillowcase needs a gentler routine than the blankets. Sleep Heavy recommends:
- Hand washing with a pH neutral detergent in 30 degree water.
- Or a delicate machine wash at 30 degrees inside a delicates wash bag.
- Air drying out of direct sunlight.
- No bleach and no tumble drying.
- Ironing on low heat, with steam or dry.
One buying note: Sleep Heavy says a pillowcase can be returned for a refund only within 30 days and before use, unused and in original condition. Once you have washed and used it, that option is gone.
Spare covers make washing easier
Sleep Heavy sells spare covers for its adult blankets in Single, Double and King/Queen, in grey cotton and several mink colours. It says many customers keep a spare so they can swap between mink and cotton through the year. A spare also means the blanket stays in use while the other cover dries. Check that the spare matches your blanket size before you order, because the covers are sold by size.
A simple routine works well: wash the cover you have been using, fit the spare straight away, and put the clean cover away once it is fully dry. The insert only needs washing now and then, by hand, as Sleep Heavy describes above.
Questions
Can I put a Sleep Heavy blanket in the washing machine?
The cover can go in the machine on a gentle cycle. Sleep Heavy says to hand wash the weighted insert in cold water, and to air dry both.
How do I wash the chunky knit blanket?
Sleep Heavy says to hand wash it or use a gentle warm machine wash in cool water (30 degrees Celsius), on its own. Dry it flat or tumble dry on low, never hang it.
Can I tumble dry the silk pillowcase?
No. Sleep Heavy says to avoid tumble drying and bleach, and to air dry the pillowcase out of direct sunlight.
Does Sleep Heavy sell replacement covers?
Yes. It sells spare covers for adult blankets in Single, Double and King/Queen, in grey cotton and mink colours.
Does the warranty cover stains?
No. Sleep Heavy's 5 year warranty covers manufacturing defects such as torn fabric or unravelling stitching, and excludes stains and soiled blankets.
Products in this guide
Shopping at Sleep Heavy? See the discount code
10% OFF Sitewide
More in this series
What Size and Weight Sleep Heavy Blanket Should You Get?29 Sep 20263 minSleep Heavy Cotton vs Mink vs Chunky Knit: What to Know29 Sep 20263 minHow Do Sleep Heavy Returns and the 5-Year Warranty Work?14 Sep 20263 minSleep Heavy Silk Pillowcase: Size, Colors and Return Rules14 Sep 20263 minWhat to Know About the Sleep Heavy Bamboo Weighted Blanket14 Sep 20263 min