Helmet with sliding facilitator arranged at energy absorbing layer

1. A helmet comprising:

an energy absorbing layer;

an attachment device provided for attachment of the helmet to a wearer's head; and

a sliding facilitator provided on an inner side of the energy absorbing layer, wherein the sliding facilitator is configured to allow sliding between the attachment device and the energy absorbing layer during an impact; and

a low friction material applied to either one or both of the sliding facilitator and the energy absorbing layer.

2. A helmet according to claim 1 , wherein the low friction material is applied to the sliding facilitator.

3. A helmet according to claim 1 , wherein the low friction material is applied to the energy absorbing layer.

4. The helmet according to claim 1 , wherein the low friction material is a waxy polymer or a powder material.

5. A helmet according to claim 1 , wherein the attachment device comprises tightening means for adjustment of the attachment to the wearer's head.

6. The helmet according to claim 1 , wherein the sliding facilitator is a low friction material connected to or integrated with the attachment device on its surface facing the energy absorbing layer and/or provided on or integrated in the inside surface of the energy absorbing layer facing the attachment device.

7. A helmet according claim 1 , having one energy absorbing layer formed from a polymer foam material or a honeycomb structure.

8. A method of manufacturing a helmet according to claim 1 , comprising:

providing an energy absorbing layer that has been formed in a mould; and

providing a sliding facilitator on an inner side of the energy absorbing layer.

9. The helmet according to claim 4 wherein the low friction material is the waxy polymer and the waxy polymer is selected from a group of polymers consisting of: PTFE, PFA, FEP, PE, or a combination thereof.

10. The helmet according to claim 4 wherein the low friction material is the powder material infused with a lubricant.