The R.E.T. is measured with a numerical index:
- RET 20: The fabric has relatively low breathability and is therefore not suitable for physical activities
- RET >40: The fabric is said to be non-breathable
You will find this information in the technical features of our product datasheets for our jacket range in particular. It is particularly important to measure the breathability of this product because, in general, the higher the waterproof rating of a garment, the less breathable it is, because of the material or coating used to stop the rain).
Another way of having a highly breathable garment, in addition to the fabric, is to choose a product with mechanical ventilation zips for regulating temperature:
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