Premium quality meets industrial safety with WORKHORSE (STP). Designed for a variety of applications, FORT MAC (STP) specializes in warmth and comfort to keep you on your feet and on the job in cold climates. Non-metallic construction CSA/ASTM Approved ESR/EH Rated Upper: Oil and acid resistant upper, laces and stitching Rust-resistant easy pull D-ring eyelets for secure fit Premium Polyurethane (PU) coated leather upper Pull loop at the back for ease of entry Base: Composite Safety Toe and Plate Oil and acid resistant Polyurethane (PU) base and rubber outsole Self-cleaning, multi-directional lug outsole design Tested in accordance to Z195-14 for Coeffiency of Friction (COF) on Quarry tile/stainless steel/wet and dry surfaces, at room temperature and cold climate conditions Insulation: Removable Comfort-Fit multi-layer inner boot system featuring: o Thermaplush™ soft, next-to-foot wicking layer for warmth o Form-fitting B-Tek™ Foam lining for comfort o B-Tek™ Heat lightweight, 4-channel hollow-fibre insulation for high-loft breathability in a broad range of temperatures o Vaporized Aluminum Membrane for energy reflection and heat regulation o PolyWool lining for moisture transfer and evaporation outside of fabric o Hydromax™ layering for improved moisture management o Diamond Net insulation for wind-resistant protection with a lightweight feel o Waffle-comb footbed designed to trap warm air and control odour Specs: Height: 11.25” External Forefoot Width: 5” External Length: 13” Weight of Pair: 7.74 lbs Care: Storage: Remove all dirt and debris from rubber, nylon or leather Wipe clean and ensure the product is dry before storing Optimal storage in a dark, dry and cool environment COLD COMFORT RATING ARCTIC RATED For adventurous pursuits in extreme cold temperatures. Arctic Rated cold-comfort is achieved with moderate to high activity and has been proven in the Arctic.