Engineered for maximum comfort and support, DERRICK (STP) features Baffin's most aggressive inner boot system. Built with non-metallic construction, DERRICK (STP)'s versatile application recommendations and maximum durability make this an essential boot for long days on the job. Upper: Tall height, oil and acid resistant Neoprene upper, laces and stitching Leather reinforced, rust-resistant easy pull D-Ring front lace fastening system for secure comfort High-visibility reflective overlay Slip-on style for ease of entry Base: Composite Safety Toe and Plate Oil and acid resistant rubber outsole for slip resistance in extreme cold temperatures Lightweight Polyurethane (PU) base for effective use at extreme freezing temperatures GelFlex™ anti-fatigue midsole for shock absorption and rebounding 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 and cold climate conditions 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 odour Double Aluminum insole returns heat and reflects cold for temperature regulation