Sleep Heavy Silk Pillowcase: Size, Colors and Return Rules

Size, colors, fabric and the unused-only return rule for the Sleep Heavy 19 momme silk pillowcase.

Updated 14 Sep 2026 3 min read 5 sections

The Sleep Heavy silk pillowcase is made from 100% mulberry silk, 19 momme, measures 73 cm by 48 cm, closes with an envelope flap and comes in Provincial Blue, Cherry Pink and Ivory. For the current code, see our Sleep Heavy codes and deals.

What you get

These details come from the store’s pillowcase page. The case is sold per pillowcase, not as a pair. The fabric is listed as 100% 19-momme mulberry silk with an envelope closure. There are three colors, and Sleep Heavy sells matching silk sleep masks in the same three shades, so you can build a set by matching the color names.

The store also lists OEKO-TEX certification on the page.

What 19 momme means on this page

Sleep Heavy describes 19 momme mulberry silk as soft on skin and hair, breathable, naturally hypoallergenic and “durable (for silk)”, with a smooth glossy finish. It says the long fibers make it stronger than cheaper silks and that it holds up without being bulky. Those are the brand’s words about its own fabric. The store also says the pillowcase keeps skin moisturized and helps prevent wrinkles, and that it is anti-mite and allergy-friendly. We cannot confirm health or skin effects, so treat them as Sleep Heavy’s claims, and ask a doctor or pharmacist if you have a skin condition or allergy.

Check the fit and ask the store

The only size on the page is 73 cm by 48 cm. Measure your pillow and compare it with those numbers, because the page names no pillow size it is meant for. Look at the product photos to see how the envelope flap sits before you decide.

The page leaves a few buyer questions open. They are worth a short email to the support address before you order:

Which pillow sizes the 73 cm by 48 cm case is meant to fit.
Whether the colors on screen match the fabric, since the page shows only product photos.
What counts as use for the return rule, for example whether taking the case out of its packaging counts.
How long delivery takes to your address, if you are in Australia, where the page lists free shipping and returns.

The matching sleep mask

Sleep Heavy sells a silk sleep mask in the same 100% mulberry 19-momme silk and the same three colors, Ivory, Cherry Pink and Provincial Blue. The store describes it as a full-coverage mask with a snug, gentle fit that blocks light. Its page carries the same return terms and care steps as the pillowcase. If you want a matched set, order both in one color name so they arrive together.

The pillowcase page shows no customer reviews yet, so there is no store rating to quote. Decide on the size, fabric and return terms instead.

Return rules and care for silk

Silk items have tighter return terms than the blankets, and this is the part to read before you buy. The pillowcase page says the money back guarantee covers returns within 30 days of purchase and before use, and that the item must be unused and in its original condition to qualify for a refund. The page lists free shipping and returns in New Zealand and Australia, with the buyer paying the return shipping.

That means a case you have slept on is not covered by the guarantee as the page describes it. Open the pillowcase, check the size and color, and decide before the first night.

The store recommends hand washing with pH neutral detergent in 30 degree water and air drying out of direct sunlight. It also allows a delicate machine wash at 30 degrees in a delicates wash bag. It says to avoid bleach and tumble drying, and to iron on low heat with steam or dry.

Sleep Heavy weighted blanket size — Mink weighted blanketNZD 285.00Image from the merchant

Sleep Heavy sells the case in the same range as its mink weighted blanket and other bedding, and dispatches from its Christchurch warehouse in roughly 2 to 5 business days.

If you are buying a weighted blanket for a child, note that the American Academy of Pediatrics advises against weighted blankets for babies. Ask Sleep Heavy about its age guidance before you order.

Questions

What size is the Sleep Heavy silk pillowcase?

73 cm by 48 cm with an envelope closure, according to the product page.

What colors does the Sleep Heavy silk pillowcase come in?

Provincial Blue, Cherry Pink and Ivory. Sleep Heavy's silk sleep masks come in the same three colors.

What is the fabric?

The store lists 100% mulberry silk at 19 momme.

Can I wash the silk pillowcase in a machine?

The store allows a delicate machine wash at 30 degrees in a delicates wash bag. It prefers hand washing with pH neutral detergent. It says to avoid bleach and tumble drying.

Can I return the pillowcase after using it?

Not under the guarantee as written. The page says the item must be returned within 30 days of purchase and before use, unused and in its original condition.

Does Sleep Heavy ship the pillowcase to Australia?

The product page lists free shipping and returns in New Zealand and Australia. The buyer pays the return shipping.