【Japan Pillow Recommendations 2026】Nishikawa AiR vs. "Pillow That Doesn't Need Counting Sheep": In-Depth Review of Two Popular Brands

The Wrong Pillow Can Leave You Tired Even After Hours of Sleep!

Have you ever felt stiff shoulders and neck, or even a headache from a stiff neck, despite sleeping for 8 hours? In the pursuit of high-quality sleep, Japan's traditional Nishikawa (AiR Series) and the emerging brand Pillow That Doesn't Require Counting Sheep (TPE Series) are both highly discussed pillow brands in Japan.

These two pillows differ completely in their core technology, and their prices and sensations also vary. Today, IRO-IRO Select Shop has compiled the ultimate comparison guide to help you find the perfect pillow for you.

Quick Comparison Chart: Understand the Differences in One Minute

Comparison Item	Nishikawa AiR (4D/4DX)	Pillow That Doesn't Require Counting Sheep (Gokoku/Gokuju/Choritsu)
Core Material	Four-layer composite structure (high-elastic foam + cooling gel)	Medical-grade TPE (thermoplastic elastomer)
Key Sensation	Scientific Support, Floating Sensation	Water-like Envelopment, Zero Pressure
Breathability Technology	Cross Slit air holes	Triangular grid geometric structure (96% breathable)
Cleaning & Care	Washable cover, non-washable core	Entire pillow can be rinsed with water
Suitable For	Professional athletes, severe shoulder/neck pain, those seeking support	Light sleepers, those concerned about odor and dust mites, those who prefer softness
Durability	Nishikawa's century-old craftsmanship, long-lasting elasticity	10-year no-collapse guarantee

 

1. Nishikawa AiR: The Scientific Choice for Professional Neck Support

The Nishikawa AiR series is the pillow of choice for many top athletes (such as Shohei Ohtani). Its advantage lies in its precise physiological curve support.

• 4D Professional Edition: Balances support and heat dissipation, suitable for most office workers with chronic neck and shoulder problems.
• 4DX Flagship Edition: Pursues ultimate breathability and double the floating sensation, the ceiling choice for those who get hot easily.
• Who is it for? If you like "firm support" and want your pillow to perfectly cradle your cervical spine and reduce resistance when turning over, Nishikawa is the way to go.

2. Pillow That Doesn't Require Counting Sheep: Giving You a "Submersive" Water-like Sleep Experience

This pillow has recently become very popular in Japan, thanks to the "zero gravity sensation" provided by its TPE material.

• Gokoku (Classic): Stable structure, suitable for most body types, provides stable pressure relief.
• Gokuju (Upgraded): Cloud-like soft touch, strongest enveloping sensation.
• Choritsu (Adjustable): 8 levels of height adjustment, best for those worried about choosing the wrong height.
• Who is it for? If you "get hot easily" , "want to put the entire pillow in the washing machine for cleaning", and like a "water-like, springy sensation", this pillow is your top choice.

Frequently Asked Questions (FAQ)

Q1: Which pillow is better for improving neck and shoulder pain?

This depends on your sleeping position. For those who typically sleep on their side, we recommend the Nishikawa AiR due to its solid raised side design. For those who sleep on their back and seek complete neck relaxation, the Pillow That Doesn't Require Counting Sheep offers a more delicate fit.

Q2: Which pillow is cooler for sleeping in summer?

Both are extremely breathable. However, the Pillow That Doesn't Require Counting Sheep has a lower perceived temperature due to its triangular grid hollow design, which allows for greater airflow, and the inherent cooling properties of TPE material.

Q3: Can the pillow be washed? How often should it be replaced?

The Pillow That Doesn't Require Counting Sheep excels in being "entirely washable," making it suitable for households with allergy concerns. It is also very durable, having passed over 80,000 pressure tests, and under normal use, does not need to be replaced for 8-10 years.

Conclusion: Investing in sleep is investing in health

A good pillow can provide quality sleep and save you money on chiropractic adjustments, acupuncture, and physical therapy.

• If you want to pursue "ultimate support and scientific neck protection"
• If you want to pursue "ultimate pressure relief and cleanliness"

IRO-IRO Select Shop ships directly from Japan to Hong Kong, ensuring your quality sleep!