1
Shoulder Width

Shoulder Width

Along the back, measure the distance between both ends of the shoulder bones (medical name: Acromion)

Shoulder Width

Shoulder Width

2
Neck Circumference

Neck Circumference

Measure the circumference of the neck. Measure just below Adam's apple.

Neck Circumference

Neck Circumference

3
Neck height

Neck height

Measure the distance from just under the bone behind the ear to the acromion (end of the shoulder bone). Make sure to keep your head upright.

Neck height

Neck height

4
Sleep position & Mattress firmness

Sleep position & Mattress firmness

What is your (predominant) sleep position and mattress firmness?

Sleep position & Mattress firmness

Sleep position & Mattress firmness