insect netting

7.22: news.gear/gortex++ -- eVent:

Gore-Tex used to be the material of choice in breathable waterproofs,

but this was recently superceded by eVent.

Both Gore-Tex and eVent are based on a PTFE (PolyTetraFluoroEthylene) membrane

. The difference between the two is that

Gore-Tex has PU layers either side of the membrane.

This is very effective at keeping the rain out,

but the only way sweat can escape is by

condensing on the inner PU layer,

turning into vapour

and then evapourating from the outer PU layer.

eVent uses a clever technique to coat the PTFE pores directly

so the sweat can escape directly

without having to condense on the inside first .