Creating a Sleep Environment Focused on Breathing: The Shinkokyu Pillow O2

Sleep-related concerns are a widespread social issue affecting people of all ages and lifestyles. Focusing on breathing during sleep, Mizuno has developed the “Shinkokyu Pillow O2,” designed to help create a more comfortable sleep environment.

The Shinkokyu Pillow O2 features a proprietary design that supports a comfortable breathing posture during sleep, increasing breathing volume by approximately 28%^*1 and helping to improve sleep quality^*2.

*1 Physical effect on head positioning achieved by supporting a comfortable breathing posture while sleeping on the back. Based on Mizuno research comparing tidal volume measurements in the supine position (comparison pillow: fiber-filled pillow, height 15 cm; Shinkokyu Pillow O2: neck section 6 cm, head section 4.8 cm).
*2 Refers to ease of breathing during sleep. Individual experiences may vary, and results are not guaranteed. This product is not a medical device. Individual experiences and perceived benefits may vary.

Breathing during sleep is one of the key factors that can influence next-day condition and physical recovery. Drawing on its expertise in sports science, together with insights from an Advanced Sleep Improvement Instructor, Mizuno has adopted a proprietary design focused on breathing during sleep.

Quality sleep is a key foundation for a healthy lifestyle and everyday well-being. However, sleep-related concerns remain a challenge for many people. Drawing on expertise cultivated through sports science and focusing on physical recovery, a fundamental function of sleep, and the mechanisms that support it, Mizuno aims to contribute to addressing social challenges related to sleep and well-being.

▼Shinkokyu Pillow O2 Special Website 
URL：https://jpn.mizuno.com/mizunosleep/deep-breath

▼Shinkokyu Pillow O2 Press Release 
URL：https://corp.mizuno.com/jp/news-release/2025/20251215