Engineered for maximum comfort and support, CONSTRUCTOR (STP) features Baffin's most aggressive inner boot system. Built with non-metallic construction, CONSTRUCTOR (STP)'s versatile application recommendations and maximum durability make this an essential boot for long days on the job.Cold Comfort RatingPOLAR RATEDFor the coldest moments on Earth. Polar Rated cold-comfort is achieved with moderate to high activity and has been Polar Proven® by us on expeditions to both the North and South Poles.Waterproof RatingB-TEK™ DRY WATERPROOF BASEWaterproof technology, offering the maximum level of wet protection at base. This category of waterproofing ensures that your footwear is purpose-driven - keeping you dry where the snow may melt, and supporting thermal regulation where breathability is needed.Slip ResistantUpper: Tall height, oil and acid resistant Neoprene and leather upper, laces and stitching High-visibility reflective overlay Pull loop at the back for ease of entry Base: Composite Safety Toe and Plate Oil and acid resistant rubber outsole Lightweight Polyurethane (PU) base for effective use at extreme freezing temperatures GelFlex™ anti-fatigue midsole for shock absorption and rebounding Fixed frost plate returns heat and reflects cold for temperature regulation Multi-directional lug design for added slip resistance in snow Tested in accordance to Z195-14 for Coefficiency of Friction (COF) on Quarry tile/stainless steel/wet and dry surfaces, at room temperature Insulation:Removable Comfort-Fit multi-layer inner boot system featuring: Thermaplush™ soft, next-to-foot wicking layer for warmth Form-fitting B-Tek™ Foam lining for comfort Double B-Tek™ Heat lightweight, 4-channel hollow-fibre insulation for high-loft breathability in a broad range of temperatures Hydromax™ layering for improved moisture management Vapourized Aluminum Membrane for energy reflection and heat regulation PolyWool™ polyester wool blend for breathable warmth DiamondNet™ insulation for wind-resistant protection with a lightweight feel Waffle-comb footbed designed to trap warm air and control odor Double Aluminum insole returns heat and reflects cold for temperature regulation Specs: Based on Men's Size: 9 Height: 13.5” External Forefoot Width: 5.5” External Length: 13.25” Weight of Pair: 9.66 lbs Care: Leather Upper: Apply non-colored shoe oil or wax to the surface Polyurethane Base: Wipe with a damp cloth to remove excess dirt, natural air dry 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