The PP Sauna Hat — Why Wool Is the Only Natural Choice
The PP Sauna Hat — Why Wool Is the Only Natural Choice
On why wool felt is the correct material for the sauna — and what happens when the head is protected by the right natural fibre.
The sauna is one of the oldest rituals of natural living. Heat, stillness, the body moving at its own pace through a process that has been part of human life across cultures for centuries. Everything about the sauna experience is stripped back to what is essential. The hat is not an exception.
The PP sauna hat is made from 100% wool felt. Not because wool is the fashionable material for this purpose, but because it is the correct one — the only natural fibre that behaves as the sauna requires.
Wool is nature’s insulating material. The fibre is crimped and hollow, creating a structure that traps air and regulates temperature with a precision no other natural fibre matches. The difference is felt immediately. Without insulation at the head, the intense heat of the sauna air concentrates at the scalp — the sensation becomes uncomfortable before the body has had time to fully benefit from the warmth. With a wool felt hat, the head stays protected. The heat reaches the body without the sharp intensity at the crown that cuts the experience short. The sauna works as it is meant to: a slow, sustained warmth rather than an acute one.
“In the sauna, as everywhere else, the right natural material makes the difference. Wool is what the sauna requires.”
— Pieter Petros, founderWool felt is also naturally moisture-wicking. As the body perspires in the sauna, the hat draws moisture away from the scalp without becoming saturated. It regulates in both directions — insulating against heat while managing moisture — in a way that no other natural material does with the same efficiency.
The PP sauna hat is made to the same standard as every other piece in the collection. 100% natural materials. No components that do not belong in a natural context. The wool is felt rather than woven, producing a dense, structured form that holds its shape under heat and steam without degrading. It is the natural accessory to a natural ritual.
PP has always been built on the conviction that what surrounds the body should come from the earth. The linen shirt, the cotton lining, the walnut button, the seashell — each a natural material chosen because it is the right one for its purpose. The wool sauna hat follows the same logic. The full philosophy behind this approach is explored in the journal.
In the sauna, wool is what the body needs. Everything else is a compromise.
