The SATRA STM 567 Endofoot

Describing the SATRA test equipment used for the ‘AMMT’ advanced moisture management test.

The SATRA STM 567 Endofoot was developed to assess the thermal and sweat management performance of complete footwear. This important characteristic is evaluated by measuring thermal insulation, moisture absorption and breathability properties, which are tested in conjunction with hose. The assessment takes into consideration the effect of the sole, upper and lining, in addition to features such as seams and different types of hosiery.

The STM 567 machine can be utilised to help set comfort benchmarks and can be used for comparative testing of footwear components – for example, to assess experimental materials.

Data from the SATRA Endofoot can be used to monitor and improve sweat management and thermal properties in all types of footwear – sports, performance, outdoor and industrial, as well as everyday dress shoes.

An innovative design

In operation, the SATRA Endofoot uses a moulded foot form which incorporates electrical heating elements and supply pipes that distribute water (to replicate sweat) to the surface of the foot.

The foot is first fitted with a standard reference sock and then the test footwear. After a warming-up period to reach equilibrium, a realistically warm and humid environment is created which replicates that to be found inside a real shoe in wear. The dressed foot is then subjected to a calibrated flow of air over its surface to replicate movement through the air when walking, (which helps to dissipate any moisture transmitted to the surface of the shoe).

In addition to moisture management tests, the test equipment can be used to conduct a cold rating test to determine the thermal properties (insulation) of footwear. Footwear comfort can then be assessed against guidelines for an external temperature and activities level.

Publishing Data

This article was originally published on page 16 of the March 2025 issue of SATRA Bulletin.

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