Frank in Oz is an expert Australian hiker. He’s co-author, with wife Sue, of Hiking the Overland Track – the downloadable book.
Frank wears mostly Mountain Designs togs. That’s an Aussie company, their gear not easily available in North America.
For warm weather:
For a particularly foul, wet adventure in Tasmania:
Click through to Frank’s excellent site for much, much more:
Our Hiking Blog – Best hiking clothes for a multi day hike – ideas, tips and suggestions
besthike.com 
Could you please give me a rough idea of what the weather conditions are like on the Overland Track, late March early April?
Will we require as much warm or wet gear?
Regards
Trish
First prepare for rain.
Then prepare for snow.
Also, email Frank
frank@ourhikingblog.com.au
http://ourhikingblog.com.au
He’s the real expert hiking there every year, in every season.
Good luck.
Rick McCharles
editor
https://besthike.wordpress.com/