Products
Are these medical devices?
No. Everything we sell is a comfort or environment product: it changes the light, weight, warmth or sound around you. Nothing here diagnoses, treats or cures a condition. If you think you have a sleep disorder, see a doctor first.
What does "evidence-based" mean on your site?
It means the type of product has been tested in published studies, and we link to them on the product page. It does not mean a specific brand or model was tested, unless we say so.
Will a weighted mask or cap work for me?
Some people find gentle pressure calming; some don't notice it; a few dislike it. There's no way to know without trying, which is why we accept returns even after use.
How do I wash a sleep mask or cap?
Each product page has its own care line. As a rule: hand wash cool, mild detergent, squeeze (don't wring), dry flat away from direct heat. Never tumble-dry anything weighted.
What size is "one size"?
Our caps and masks are stretch fabric and fit most adult heads, roughly 54–60 cm around. If you're outside that range, email us before ordering and we'll measure one for you.
Are your products safe for children?
Weighted products are for adults and teens only, never for infants or young children. Lights and non-weighted masks are fine for older children with an adult's judgement.
Orders and shipping
Where do you ship?
The United States and Hong Kong for now. Full details, rates and delivery times are in the shipping policy.
How long does delivery take?
US standard shipping is 7–15 business days; Hong Kong is 2–5 (standard) or 1–2 (express). Orders leave within 1–3 business days.
Is shipping free?
Yes, on US orders of $75 or more and Hong Kong orders of $70 or more.
Will I pay import duties?
Possibly. Prices don't include duties or taxes, and your carrier may collect them on delivery. See the shipping policy for details.
Can I change or cancel an order?
Email us as soon as you can. We can change or cancel anything that hasn't shipped yet.
Returns
What's your return policy?
30 days from delivery, even if you've used the item. It should come back clean and in its packaging. Full details in the returns policy.
Who pays return shipping?
If the item is faulty, damaged or wrong, we do. If you changed your mind, you do. There's no restocking fee.
Something arrived damaged. What now?
Email a photo within 7 days of delivery. We'll replace it or refund you, and you usually won't need to send it back.
Anything else
Email xiaowen.yu.work@gmail.com. We reply within two business days, usually faster.