Protect Against Waves

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Boiled wool hats “A winter in Berlin”.

Need protection and warmth?

Our woolen hat “A winter in Berlin” will delight you!

Elegance in protection: it is signed Ondes et Protection ®.


Do you want to offer and have doubts about size or color? Don't take unnecessary risks!


To face the winter while protecting you against the waves,here is a warm and elegant hat which guarantees you 60 DB of protection thanks to the 20% of silver entering the composition of the shielding.

Our now usual three-layer design: boiled wool (of truly magnificent quality) on the outside, organic cotton (yes, still GOTS certified) on the inside and anti-wave in between.

According to your needs and desire, you will wear it without creases, thus providing you with a deep hood,

or with a fold, surrounding your face without forgetting to protect it.

Depending on your taste or your desire, you will choose to let the hat’s knots surround your face or you will tie them at the back of your head

A hat that never ceases to amaze you!

As with all our products, our hat is made in France.

Additional information

Weight 0.3 kg
Line Description

Elegance in the city and in the countryside.



  • By hand, without rubbing or twisting:
    • soak for a few minutes to allow the fabric to soak well
    • very little soap, non-aggressive laundry product (organic type)
    • press the garment. NEVER ROTATE if there is a stain. In this case, use an soft toothbrush, a little soap (gall soap in organic stores) and rub gently
    • NEVER TWIST to spin. Always squeeze as you would a sponge
    • drying flat or on a rope, pinched regularly. Avoid full sun.
  • Machine washable:
    • in a small laundry bag (like for lingerie)
    • maximum temperature 30°.
    • gentle spin
    • in a full drum
    • non-aggressive detergent (organic type)
    • drying flat or on a rope, pinched regularly. Avoid full sun.


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5G Protection

Our shields, and therefore our protective clothing against waves, have been designed from the start for protection over a wide spectrum of frequencies, covering the frequencies that are now those of 5G.

Learne more about 5G….

Protect against Waves Shield

The shield used is

  • 100% silver: silver is the best performing metal in terms of wave attenuation, which is why we do not use any other metal
  • Totally coated with silver (and non-woven with a metal thread), which explains its remarkable performance
  • Biocompatible (see Glossary)
  • Certified without nanoparticles
  • Tested to military standard ASTM D4935-10 and/or IEEE-STD-299-2006

The principle of attenuation of the electromagnetic wave is the principle of reflection. Grounding is therefore uselesssince it is only used to eliminate overvoltages and losses of electrical charges as well as electrostatic discharges.

60 db attenuation

Thanks to the high percentage of silver used in its composition, the very high performance shielding of this article greatly reduces exposure:

  • high-frequency waves emitted by cordless DECT telephones, WLAN (wireless local area network) or Wifi wireless networks, mobile telephony, bluetooth, etc.
  • to electric current linky
  • to radiation from low frequency electric fields 50H

This shielding has an attenuation of 60 decibels; in other words, its efficiency is 99.9999% against high and low frequencies, a reduction of 1,000,000 times the power of the wave (access to tests).