This part of European standard EN ISO 11393 specifies the demands for leg protection wear and defines three types (or designs) of leg protection wear, according to the kind of protection:

Type A

The chainsaw protective clothing of type A and type B are mainly intended to be used for forestry work by professional lumber jacks who have been trained and informed.(*)

Type A (or front protection) covers each leg partly (180°) and 5 cm to the interior part of the right leg and 5 cm to the exterior part of the left leg.
Protection starts at max. 5 cm from the bottom of the leg and ends at min. 20 cm above the crotch.

Type B

Type B is the description of an entirely new style: the Chainsaw Protective Chaps. (*)

Type C

The chainsaw protective clothing of type C are intended to be used by people who normally don’t work with chainsaws or in exceptional situations.

Type C covers each leg all around (360°) protection. The protection starts at max. 5 cm from the bottom of the leg and ends at min. 20 cm above the front of the side of the crotch and at min. 50 cm under the back side of the crotch.

(*) For types A and B, the protection must be fixed permanently on the sides of the protective padding.
The fixing of the protection must resist a force of min. 200 N. Class 0 (16 m/s) is not applicable to the EN 381-5 standard.