A matched team looks professional — and it makes headcount checks faster. Keep the combination simple.
Pick one helmet style and one vest style for the whole team, and use colour to separate roles: for example, one vest colour for supervisors and another for general workers.
Order spares with the first batch. Helmets and vests wear out and get lost; a small spare stock avoids a worker on site without protection.
Confirm the full combination at inquiry: helmet style, vest style, colours and quantities. One inquiry covering both items is faster than two separate threads.