Steel toe or composite?
Steel is the traditional cap and usually cheaper. Composite weighs less and does not conduct heat or cold, which matters if you are in and out of a cold room, on hot ground, or through a metal detector several times a day.
Lace-up or elastic-sided?
Elastic-sided pulls on and off at the door, which suits site work and anyone in and out of a vehicle. Lace-up holds the ankle better on uneven ground and is what most people want for a full day on their feet.
What about the wet season?
Water and heat are hard on boots here. A waterproof-lined boot keeps the rain out but holds sweat in; a drainage-friendly unlined boot dries faster. If your crew works in standing water, tell us and we will point you at what survives it.
Do I size boots the same as shoes?
Not reliably. Brands here run on different lasts, and a safety cap changes the fit at the toe. Every product page carries the manufacturer's own chart; if you are ordering for a crew, get one pair first rather than a carton.