Will the ShellTA keep me dry?

Don’t believe manufacturers that claim their products will always keep you dry. Even if the fabric is 100% waterproof the inside can easily reach the dew point due to cold bridging, causing condensation on the inside.

To prevent condensation the temperature and/or pressure must be raised or the humidity reduced. The massive venting of the ShellTA can reduce condensation build-up, but there will inevitably be times that the inside gets wet – it’s just the laws of physics.

I’d recommend using the ShellTA as extra protection for Hardshells or water resistant Softshells unless conditions are warm and wet, when you may want to use it over shorts and T-shirt.

When the ShellTA is used over other water resistant layers it can reduce dampness inside them by drawing water off the surface and improving breathability. Please see this post about cavity wall construction.