Experience Tranquility: Spleen's 3D Silk Sleep Mask Launches

Introduction to Spleen's 3D Silk Eye Mask

Spleen, a self-care brand founded by Seiko Hiramatsu, is all set to launch its flagship product, the 3D Silk Eye Mask, on July 1, 2026. Achieving an impressive 151% of its funding goal on the crowdfunding platform Makuake, this innovative sleep accessory is designed to enhance the nighttime experience by helping users disconnect from their smartphones and focus on self-care during the critical pre-sleep ritual.

The Inspiration Behind Spleen

With the rise of smartphone usage leading to deteriorating sleep quality, Spleen seeks to provide not just a functional product but one that enhances the overall experience of sleeping. Understanding that a few intentional moments before bed can significantly improve the quality of sleep, the brand encourages users to embrace the tranquility of night. It invites them to lay down their devices, wrap themselves in silk, and take a few deep breaths before drifting off to sleep.

Makuake Success Story

Between March and May 2026, Spleen ran a successful pre-sale campaign on Makuake, resonating with many supporters. Testimonials poured in from people expressing excitement about having a comfortable eye mask that doesn’t press against their eyelashes. This overwhelming response was instrumental in reaching the target funding goal and marked a significant milestone for the brand.

Physical Store Experience at CHOOSEBASE SHIBUYA

Starting July 1, Spleen will not only offer its products online but will also have a temporary showroom at the CHOOSEBASE SHIBUYA store, located on the first floor of the Seibu Shibuya store parking facility. This pop-up will run until September 30, 2026. Visitors will have the unique chance to feel the luxurious texture of the silk and experience the product's unique 3D structure firsthand, making this an unmissable opportunity for those seeking tranquility before bedtime.

Store Details:

- Location: CHOOSEBASE SHIBUYA, 1st Floor of Seibu Shibuya Store Parking
- Duration: July 1 to September 30, 2026
- Hours: 11:00 AM - 9:00 PM (subject to store hours)
- Products Available: Spleen 3D Silk Eye Mask and Satin Pouch Set in three colors.

Unique Features of the 3D Silk Eye Mask

The Spleen 3D Silk Eye Mask transcends the ordinary functionality of a typical sleep mask, aiming to create a calming atmosphere conducive to relaxation.

1. Room for Blinking

Spleen's exclusive 3D design preserves enough space around the eyes to accommodate blinking without pressure, ensuring comfort that caters to those with eyelash extensions or those wishing to avoid discomfort during sleep.

2. Effective Light Blocking

The specially designed nose cover ensures a snug fit, blocking out any sneaky light that might disrupt your relaxation. Made from soft materials, it comfortably adapts to the contours of your face, promoting deep immersion and relaxation.

3. Adjustable Fit for Comfort

Equipped with an adjustable strap made from elastic, the mask can be tailored to fit any head size without causing discomfort, ensuring a pleasant experience throughout the entire night.

Product Overview

- Name: Spleen 3D Silk Eye Mask and Satin Pouch Set
- Price: 8,800 JPY (including tax)
- Colors Available: Evening Whisper (Lavender), Morning Glow (Yellow), Gentle Retreat (Green)
- Materials: Made from 100% 6A Grade 22 momme Mulberry Silk with polyurethane padding
- Included Items: Eye mask, satin pouch, and a dedicated box
- Purchase Locations: Available on Spleen's Official Website and CHOOSEBASE SHIBUYA

Brand Philosophy: "Making Night Beautiful"

Spleen is committed to enhancing the nighttime ritual, focusing on those precious ten minutes before sleep. Drawing inspiration from Charles Baudelaire's poetry, the brand embraces a soothing ritual that acknowledges the natural melancholy ('spleen') of life as a part of the nocturnal tranquility, transforming it into a peaceful experience ('sleep').