Footwear is the only part of your outfit that is worn all day every day, choosing a quality boot will lead to a better quality of life. 

When choosing safety boots, you can consider things like:
Safety features: Ensure the boots are certified to meet or exceed CSA and ASTM standards. Toe protection is a basic requirement for most trades.
Comfort: Uncomfortable boots can lead to injury or accidents. The internal construction of the boot has a significant impact on your comfort throughout the work day, and the support for your legs and spine over the lifetime of the boot.
Ankle support: Ankle support helps prevent sprains and other damage.
Durability: High-quality safety boots can withstand wear, pressure, or damage. Specialty work boots are designed to withstand the extreme temperatures of certain trades.
Slip resistance: Slip-resistant soles provide a firm grip on wet or slippery surfaces.
Metatarsal guard: Metatarsal guards protect your entire toe and metatarsal area, which are vulnerable to injury.
Cleaning: Keeping safety boots clean will help them last longer and perform better.
You should also inspect your safety boots before each use for wear and tear, cracks, holes, separation of materials, broken buckles or laces, and embedded items in the soles.