---
product_id: 357162283
title: "Sleep Mask for Side Sleepers, 100% Blackout Eye Mask for Women Men"
brand: "umisleep"
price: "¥3186"
currency: JPY
in_stock: true
reviews_count: 13
category: "Umisleep"
url: https://www.desertcart.jp/products/357162283-sleep-mask-for-side-sleepers-100-blackout-eye-mask-women
store_origin: JP
region: Japan
---

# 100% blackout, no light leakage adjustable strap for perfect fit 3D zero-pressure eye spacing Sleep Mask for Side Sleepers, 100% Blackout Eye Mask for Women Men

**Brand:** umisleep
**Price:** ¥3186
**Availability:** ✅ In Stock

## Summary

> 🌙 Sleep Like a Pro: Total Darkness Meets Tailored Comfort

## Quick Answers

- **What is this?** Sleep Mask for Side Sleepers, 100% Blackout Eye Mask for Women Men by umisleep
- **How much does it cost?** ¥3186 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/357162283-sleep-mask-for-side-sleepers-100-blackout-eye-mask-women)

## Best For

- umisleep enthusiasts

## Why This Product

- Trusted umisleep brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Customizable Comfort:** Elastic adjustable straps ensure a secure, irritation-free fit for all head sizes.
- • **Total Darkness Guarantee:** Snug fit around nose blocks all light, creating the ultimate sleep sanctuary.
- • **Lash-Friendly 3D Eye Space:** Innovative eye cavity design prevents eyelash damage and pressure—blink freely all night.
- • **Breathable & Durable Fabric:** Double-sided ice fabric wicks heat and moisture, keeping you cool and comfortable long-term.
- • **Ergonomic Side-Sleeper Design:** Curved structure eliminates face pressure and mask shifting for uninterrupted rest.

## Overview

The Umisleep Sleep Mask is expertly engineered for side sleepers, featuring a 3D contoured design that eliminates pressure on the face and eyelashes. Its 100% blackout capability ensures no light intrusion, while adjustable straps provide a personalized, secure fit. Crafted from breathable, durable materials, this mask guarantees cool, comfortable, and uninterrupted sleep—perfect for professionals who demand restorative rest anytime, anywhere.

## Description

Breathable 3D contoured sleep mask with adjustable strap provides a dark, pressure-free environment for side sleepers, promoting better rest and relaxation.

Review: Don't sleep on these, get a pair now! - Having spent the past month or so waking up at 5am, regardless of when I went to sleep, I decided to try my luck with this eye mask (rather than buy expensive and bulky blackout blinds). I owned an eye mask before, which was a thin, moulded piece of felt, but I found that every time I woke up at silly o'clock, the mask was lying on the floor beside me. So, I thought I'd take a punt for £7 and try these out. Whilst they are bulkier than my felt eyemask, they are light and extremely comfortable, with a wide enough strap that you don't feel is digging into your head. Now, the 5-star rating is a dead giveaway but, oh my, these are amazing. Firstly, waking up in absolute darkness because they had stayed on throughout the night was initially surprising. Secondly, taking them off and the sunlight is streaming into the bedroom was a (very pleasant) shock. In the few days since using these I have slept through the night and had an extra two hours of much-needed sleep and rest. One of my neighbours also has a security light that the foxes trigger almost every 15 minutes, so I'm now falling asleep much quicker and easier. Needless to say, I have bought another pair for when these (potentially) give up the ghost. An essential purchase, especially at such a bargain price.
Review: Very Comfortable - Absolutely love this sleep mask. It’s made of sleek, lightweight materials that are quite comfortable upon wearing, and does an amazing job at blocking light. The elastic band is easily adjustable as well for added comfort and to ensure the mask stays in place while using it overnight. For the low price it costs, I highly recommend it as it does get the job done.

## Features

- Optimized Comfort for Side Sleepers: The curved structure of the sleep mask, designed specifically for side sleepers, avoids pressure on the face and prevents shifting. The ultra-soft material provides a comfortable fit, allowing the eye mask to adapt to various sleeping positions
- Superior Light-Blocking Design: This sleep eye mask is ergonomically designed to fit different head shapes, effectively blocking light leakage. It fits snugly against the bridge of the nose, preventing shifting and light penetration during side sleeping, ensuring a dark sleep environment
- Adjustable Customizable Straps: The elastic, adjustable straps easily adapt to head circumferences for women and men. A customized wearing experience approved by users avoids ear-irritation or looseness issues, improving the stability of the sleep eye mask
- 3D Zero-Pressure Eye Spacing: The innovative 3D eye socket design provides extra space for users with long eyelashes, preventing pressure on the eyelids or eyelashes, allowing for complete eye freedom during sleep
- Breathable and Durable Material: The breathable double-sided ice fabric efficiently dissipates heat and moisture, solving the problem of stuffiness and discomfort. The wear-resistant and washable process ensures the eye mask will not fade or deform over long-term use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09DXYX7BQ |
| Age Range Description | Women, Men |
| Age range (description) | Women, Men |
| Best Sellers Rank | 3,696 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 21 in Sleep Masks |
| Brand | Umisleep |
| Brand Name | Umisleep |
| Closure Type | Hook and Loop |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 3,447 Reviews |
| Item Weight | 38 Grams |
| Manufacturer | Umisleep |
| Manufacturer Part Number | YZ01 |
| Material | 100% Memory Foam, 83% Nylon and 17% Spandex |
| Material Features | Breathable |
| Material Type | 100% Memory Foam, 83% Nylon and 17% Spandex |
| Material feature | Breathable |
| Model Name | Umisleep 3D Antifaz para Dormir |
| Model Number | YZ01 |
| Number of Items | 1 |
| Other Special Features of the Product | Adjustable Strap, Breathable, Ergonomic, Lightweight |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Size | 1 count (Pack of 1) |
| Special feature | Adjustable Strap, Breathable, Ergonomic, Lightweight |
| UPC | 755419007194 |
| Unit Count | 1.0 count |

## Product Details

- **Age range (description):** Adult, Kids
- **Brand:** Umisleep
- **Closure type:** Hook and Loop
- **Colour:** Black
- **Material:** 83% Nylon and 17% Spandex
- **Material feature:** Breathable
- **Number of items:** 1
- **Product care instructions:** Washing instructions Hand wash Water temperature <4 0 ° C Do not bleach Do not iron
- **Special feature:** Adjustable Strap, Breathable
- **Unit count:** 1.0 count

## Images

![Sleep Mask for Side Sleepers, 100% Blackout Eye Mask for Women Men - Image 1](https://m.media-amazon.com/images/I/71gxZg4kn1L.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Don't sleep on these, get a pair now!
*by D***N on 24 July 2025*

Having spent the past month or so waking up at 5am, regardless of when I went to sleep, I decided to try my luck with this eye mask (rather than buy expensive and bulky blackout blinds). I owned an eye mask before, which was a thin, moulded piece of felt, but I found that every time I woke up at silly o'clock, the mask was lying on the floor beside me. So, I thought I'd take a punt for £7 and try these out. Whilst they are bulkier than my felt eyemask, they are light and extremely comfortable, with a wide enough strap that you don't feel is digging into your head. Now, the 5-star rating is a dead giveaway but, oh my, these are amazing. Firstly, waking up in absolute darkness because they had stayed on throughout the night was initially surprising. Secondly, taking them off and the sunlight is streaming into the bedroom was a (very pleasant) shock. In the few days since using these I have slept through the night and had an extra two hours of much-needed sleep and rest. One of my neighbours also has a security light that the foxes trigger almost every 15 minutes, so I'm now falling asleep much quicker and easier. Needless to say, I have bought another pair for when these (potentially) give up the ghost. An essential purchase, especially at such a bargain price.

### ⭐⭐⭐⭐⭐ Very Comfortable
*by B***H on 17 March 2026*

Absolutely love this sleep mask. It’s made of sleek, lightweight materials that are quite comfortable upon wearing, and does an amazing job at blocking light. The elastic band is easily adjustable as well for added comfort and to ensure the mask stays in place while using it overnight. For the low price it costs, I highly recommend it as it does get the job done.

### ⭐⭐⭐⭐ Still has light bleeding through
*by C***E on 7 January 2025*

I love this mask. 🟢 Comfortable to lie with on my back 🟢 Comfortable, but less so, to lie on my side. I have to position it perfectly and stay still. 🟢 Very effective at relieving eye strain headaches 🟢 It's very soft and silky 🟢 Easy to adjust and doesn't push against my eyes 🟡 Keeps out 99% of light but I still have light coming through by my nose. This might be due to my face shape. I do have DNS, and I can fiddle with the nose piece long enough that I can't see light any more, but I have to adjust it very precisely. 🟡 Sometimes when adjusting the nose piece that precisely, the pressure of it holding itself on my face with the elasticity feels like it blocks up my nostrils a bit. Again, probably not helped by my DNS.

## Frequently Bought Together

- Umisleep Upgraded Sleep Mask, Perfect Sleeping Mask for Side Sleepers, 3D Ultra Soft Comfortable Eye Masks for Sleeping Women Men Kids with Adjustable Strap, Blindfold for Travel/Sleep/Nap, Black
- Ear Plugs for Sleep Soft Silicone Reusable, Earplugs for Sleeping Noise Cancelling(4Pairs) Multicoloured

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**Shop now:** [https://www.desertcart.jp/products/357162283-sleep-mask-for-side-sleepers-100-blackout-eye-mask-women](https://www.desertcart.jp/products/357162283-sleep-mask-for-side-sleepers-100-blackout-eye-mask-women)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-10*