Brolga Bill's Bike Trail (BBBT)
'Twas Brolga Bill, from Rutherglen, that caught the cycling craze,
He turned away the good old wings that served him many days...

This geoart shows Brolga Bill's bike.
It is designed so you can be like Brolga Bill, and complete the trail by bike.
(and hopefully not come to the sticky end like his mate Mulga Bill)
All the puzzles are about bike riding, and can be solved with an easy online search.
The puzzle
During the worldwide bike boom of the 1890s, cycling was seen as an exciting new option for transport taken up eagerly by many people. The craze for cycling in the 1890s is portrayed in the poem Mulga Bill's Bicycle by Australian poet Banjo Paterson, and many other ballads from the time. For women at the time, cycling provided the opportunity of more freedom and being able to wear less restrictive clothing.
Question: What was the less restrictive clothing called? (two words, no spaces)

You can validate your puzzle solution with certitude.