By turning onto the back or side position during sleep, a big height difference is created in the neck area, if one assumes the optimal head position is kept.

When this height difference during turning in your sleep is not taken into account and the optimal position cannot be kept, blood vessels, nerves and lymph glands can be closed off under pressure.

Pillow height difference (overview)

Gravity and body weight presses on blood vessels, nerve strands and lymph glands in every sleeping position. That results in restrictions to the blood circulation, stiffness of the neck and pain during the night. In order to avoid this unpleasantness during a long sleep, every person unconsciously turns up to 30 times (different from person to person).

To ensure a good sleep in the side position, one needs a higher pillow for the spine to stay straight. However, if the same pillow is used in the back position, the trapezius muscles and the muscle groups around the neck are tensioned. Pressure is exerted on the blood vessels and nerve strands leading to the head.

Pillows suitable for side position

For a good sleep in the back position one needs a lower pillow than for the side position. When this pillow is again used for the side position, a height difference is again created, which tensions the muscles and exert pressure on the blood vessels and nerve strands.

Pillows suitable for back position

The ideal would be a pillow that can automatically adjust this height difference. After many years of development Mr. Hiroyuki Mano, the inventor of the PegasusWing, has succeeded in manufacturing this dream pillow (patent applied for). 

The individually manufactured special springs are only once adjusted initially in the height-adjustable PegasusWing pillow. After that adjustment of the height difference takes place automatically at every turn of the body. Initial adjustment is always dependent on size, weight, strength, body characteristics and turning habits.

The human head weighs about as much as a watermelon. It is supported and balanced by several different muscle groups and the skeleton. Exertion and tension during the day cause the neck to become stiff. This condition should be recuperated from during sleep through the correct head position in both the back and side positions.

Muscles that can be subjected to tension

through incorrect pillow height

Force of gravity, S curve and PegasusWing

During sleeping pressure is exerted on the muscles, blood vessels, nerve strands and lymph glands in the underside of body through the force of gravity and body weight. During a longer period in the same sleep position one then soon becomes aware of the uneven blood circulation and the irritation of the nerves. Therefore one unconsciously turns during sleep.  Up till now there was no single pillow that automatically provides the ideal height for the head position in both the back and side positions. For the back position a low pillow is the ideal and for the side position a higher pillow.

PegasusWing automatically makes these two different pillow heights during sleep possible.

Man has developed over millions of years and is now walking upright. Because of this skeleton construction and the muscles man needs a pillow for sleeping. The neck must carry a weight of 4-5kg. The head houses important functional strands for the eyes, nose, tongue and ears. The head rests on the neck, which must move it horizontally and vertically at will.

The spine has 7 cervical vertebrae on top of one another. Compared to the head and chests the neck is quite narrow for this responsibility. The vertebral canal runs inside the length of the spinal column, through which the nerve strands runs in the spinal marrow. To protect these sensitive strands and to move the spine freely as an axis, several muscle groups cross each other, which join the head to the body and stabilise it.

In a standing position the spine, consisting of 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae, 3-6 coccygeal vertebrae, in other words a total of 32 - 36 vertebrae, appears straight from the top to the bottom in the front and rear view. The profile view however appears as an S curve. Because of this S design it can carry the head and function as a spring against gravitational forces and oscillations.

Due to the S curve construction the spine is bent slightly forward. For that reason the head lies slightly in front of the line, which runs from the buttocks upwards through the back. During standing and sleeping this S line is maintained, enabling every muscle to hold the heavy head with little exertion. This way muscle fatigue is relatively low, blood circulation is unrestricted and the nerves are not put under pressure. Therefore one needs a low pillow in the back position for a good and healthy sleep.

Depending on the (body) type every person turns

up to 30 times during sleep

Sleeping in the back position is often the most comfortable. However, after a longer time in this position the body weight and the force of gravity exert pressure on the blood vessels, which leads to nerve tension in the underside of the body. That causes a blockage of the blood circulation, preventing the transporting of enough oxygen to the muscles. Lactic acid accumulates in the muscles, leading to fatigue and pain. Pain is also caused by pressure on the nerves. That leads to repeated turning during sleep.

When the sleep position is changed, an ordinary pillow does not adjust to the height of the head, which means that the head lies either too high or too low. To compensate for that one intuitively puts your hand under the pillow or try to reshape the pillow. That disrupts healthy deep sleep.

On-the-side sleepers and people convinced of remaining in the same position the whole night often use a higher pillow. When one turns onto the back, extreme pressure is exerted on the nerve strands and on the trapezius and levator scapula muscles, which disrupts sleep. In this position many people unconsciously remove the pillow and continue sleeping without it. Due to the years of habit they often put it back when turning to the side position.

Both sleep positions are very different, because in the side position the shoulders are pulled forward. In order to overcome the height difference between the outer shoulder line and line of the ear, a higher pillow is needed. A pillow for the back position is not suitable.  Mass-produced pillows also rarely provide the desired effect, because the measurement is taken in the back position. That again causes the mentioned difference in the side position. The same applies in side position pillows. 

Two more PegasusWing benefits

1. It spares the sacral spinal column

With the PegasusWing you sleep much more comfortable in the side position and therefore remain almost twice as long in the side position as in the back position. That reduces lying time on the back.

2. It reduces snoring

With the PegasusWing you sleep much more comfortable in the side position and therefore remain almost twice as long in the side position as in the back position. That reduces lying time on the back and automatically snoring.

Snoring occurs when the velar and the uvula during sleep in the back position relax and go limp. That results in the air passages becoming narrower, which means that air cannot be transported back and forth quickly enough. In the side position the velar hangs to one side, which reduces the probability of snoring.

The exclusivity

Animals sleep in their own unique position depending on their kind. Regular and balanced sleep is important for people. The significance of healthy, 7-8-hour sleep (differs from person to person) is the revitalisation of body and mind, memory, immune system, the release of Somatotropin (human growth hormone) and to alleviate stress. Sleep is still a mystery, almost more important than nutrition. It has been proven that human beings can live longer without food than without sleep.

But it is important to understand sleep better with regard to gravitational forces and the stature of the human being. If needed, man can sleep under the most extreme conditions. But bad sleep due to tension and unsuitable sleep locations results in fatigue and psychological and physical ailments that can cause diseases and accidents. This strain also affects the vitality, the quality of life and longevity.

The history

Since its origin man's nature has been to be very inventive. Many things were created and invented and more things are constantly being developed. However, the quest for the perfect pillow remained unsuccessful despite intensive experiments with material, hardness, form, air permeability, height and support. Attention was never paid to height differences.

PegasusWing now offers automatic height adjustment according to the recumbent position. The different position and the resulting change in weight distribution are now evened out for the first time by the specially crafted springs of the PegasusWing. Most people are not aware of this problem of sleep disorder or they have become used to it. All the more reason why the resulting long-term damage should be taken seriously. The PegasusWing system is the first pillow system that tackled this problem and found a solution for it.

The inventor

Hiroyuki Mano from Japan invented the PegasusWing. He has been experimenting for several years and performed tests with various prototypes with regard to sleeping habits, safety, absence of friction, simplicity and form (the 5 categories). That is why we describe the PegasusWing as the pillow with 5 stars. It is a dream pillow, which can be adjusted for every body type with a simple Allen key.

The name

Pegasus is a white horse with wings from the Greek mythology. In China this symbol represents the highest god that ascended into the heavens and became a star sign. The pillow is called after the symbol because the height adjustability is similar to the flapping of wings of the winged horse. PegasusWing is the first pillow of its kind.

The secret

We wish you a good night with the PegasusWing and hope that you will enjoy a refreshing sleep as if on the clouds and be able to greet every morning as if reborn.