A strop is a length of material, usually leather or cotton, used to realign the edge before shaving.
Hanging strops come in different widths from about 50mm (2") to about 75mm (3"). A 50mm wide strop requires you to do definite long X type laps when stropping. A 65mm wide strop does not require you to do such definite long X type laps while a 75mm wide strop allows you to do straight laps up and down. The wider the strop, the more susceptible it is over time to cupping. A strop of about 65mm width is a good compromise.
Strops also vary in length from a stropping length of about 300mm (12") to 600mm (24") or more. The shorter the stropping length, the more laps are needed for the same effect on the blade's edge. The longer the strop, the difficult it can be to use. A good compromise is a stropping length of about 450mm (18").
Types
Hanging strops
The most common type of strop is the hanging strop. Usually made of leather or cotton it is a long rectangle of material. One end of the strop is hung from a hook or something else, while the other end is held and pulled taut with a hand.Hanging strops come in different widths from about 50mm (2") to about 75mm (3"). A 50mm wide strop requires you to do definite long X type laps when stropping. A 65mm wide strop does not require you to do such definite long X type laps while a 75mm wide strop allows you to do straight laps up and down. The wider the strop, the more susceptible it is over time to cupping. A strop of about 65mm width is a good compromise.
Strops also vary in length from a stropping length of about 300mm (12") to 600mm (24") or more. The shorter the stropping length, the more laps are needed for the same effect on the blade's edge. The longer the strop, the difficult it can be to use. A good compromise is a stropping length of about 450mm (18").