Here are some important features to look for:

1. Insulation: The primary feature of a freezer safety boot is its insulation capability. Look for boots with high-quality insulation materials such as Thinsulate™ or similar technology that provide excellent thermal protection. The Gator Polar Freezer Boot is lined with the maximum 600g Thinsulate cold insulating and anti-cold material from 3M.
   
   
   
   
   
2. Temperature rating: Check the temperature rating of the boot to ensure it can withstand the specific low temperatures you'll be exposed to. Look for boots rated for sub-zero temperatures, ideally up to -40 degrees Celsius or lower. 
   
   
   
   
   
3. Waterproofing: Make sure the boots have effective waterproofing to keep your feet dry in freezing conditions. Boots featuring a waterproof membrane offer the highest level of protection against water penetration. Webbing inside a zip sided boot creates an additional layer of protection against water ingress and helps seal the gap between the zipper and the boot material.
   
   
   
   
   
4. Slip-resistant outsole: In icy or wet conditions, it's crucial to have a boot with a slip-resistant outsole. Look for boots with deep treads and a specialised rubber compound that provides good traction on slippery surfaces.
   
   
   
   
   
   
5. Toe protection: Choose boots with reinforced toe caps to protect your toes from impact and compression hazards that may occur in cold storage environments. Toe caps made of composite material does not conduct cold yet still provides the same 200j impact protection as a traditional steel toe cap.
   
   
   
   
   
6. Comfort features: Consider features that enhance comfort during long hours of wear. Look for boots with cushioned insoles, padded collars, and ergonomic designs that provide good arch support. Boots with moisture-wicking linings (such as the waterproof membrane) can also help keep your feet dry and comfortable.
   
   
   
   
   
7. Composite Pierce Resistant midsole: Boots with a pierce resistant midsole helps protect the foot from puncture injuries. Composite pierce-resistant midsoles also possess excellent thermal insulation properties for workers in extreme temperatures, such as foundries or cold storage facilities. The insulation provided by the composite material acts as a barrier against both heat and cold, safeguarding the wearer's feet from potential burns or frostbite.
   
   
   
   
   
8. Reduced weight: Working in freezer environments can be physically demanding. Having composite material for the toe cap and pierce resistant midsole rather than steel helps reduce the weight of the boots without compromising on its safety and helps prevent fatigue.
   
   
   
   
   
9. Easy on/off design: Look for boots with features like pull tabs or side zippers that facilitate easy wearing and removal, especially when you need to put them on quickly or remove them in case of emergencies. 
   
   
   
   
   
   
10. Compliance with safety standards: Ensure that the boots are certified to the relevant safety standards for protective footwear. This ensures that the boots have undergone testing to meet specific safety requirements. Products with the BSI's Benchmark Product Certification logo indicates that the conformity of the products are based on technical documentation and an annual review of their manufacturing and quality control process to monitor their ability to consistently produce is in compliance with AS 2210.3:2019.