Denier (or D) can be roughly defined as the diameter (thickness) of the thread used to weave the textile,
and this approximation is acceptable for everyday use.
A textile can be defined as a fabric or cloth created by either weaving or knitting (also crocheting & felting)
with a thread, fibre or yarn.
Breathability is about water vapour evaporation, not breathing ! For a technical definition go to the BSI (British
Standards Institute) website; our textiles comply with
BS3424 (water vapour permeability).
We also use two plastic materials, for which thickness is defined in
microns. A micron
is 1/1000th of a millimetre; for comparison, a human hair is about 100 microns. For true English we also
show the approximate 1/1000th of an inch equivalent !
These plastics are 100% waterproof (ie completely impervious to water) and therefore not breathable.