Taped or untaped hi-vis?
Untaped is day-use — Class D under AS/NZS 4602.1. Taped adds retroreflective tape so you are still seen in low light, which is Class N or the combined Class D/N. If any part of the job runs into dusk, or near a road corridor or moving plant, you want the tape. Both are ranged here under Workwear.
Long sleeve in this heat?
It reads backwards until you have worked a dry-season day in it. A lightweight long sleeve in a vented ripstop keeps the sun off your forearms and moves air; bare arms in the Top End sun are hotter, not cooler. Look for vented backs and a low fabric weight.
Cotton drill or poly-cotton?
Cotton drill breathes and wears in, and it is what most Territory crews keep going back to. Poly-cotton holds its colour, dries faster after a wet-season soaking and creases less. Composition and fabric weight in gsm are on each product page — lighter is not always weaker, but it is always cooler.
Do you stock safety footwear?
Yes, under Men's → Footwear. Steel toe is the traditional choice; composite toe weighs less and does not conduct heat or cold, which matters if you are in and out of a cold room or on hot ground all day.