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. Temperature Rating: -100ºC/-148ºFOil and acid resistant Neoprene and leather upper designOil and acid resistant stitching, laces and metal free hardwareHigh visibility reflective stripsOil and acid resistant rubber outsole for slip resistance in extreme cold temperaturesIce Bear outsole design for additional traction in ice and snowLight weight PU base is cold crack tested to 50,000 flexes at -50ºC/-58ºFLight weight GelFlex mid-sole provides cushioning to reduce fatigue and improve comfortImproved fit allows for maximum comfort and supportMetal free safety toe and plate with electric shock resistant soleBaffin -100ºC/-148ºF 8 layered inner bootMicro cellular waffle foot-bed traps air and moistureFrost plate foot-bedCSA/ASTM/CE approvedESR/EH rated Style: POLA-MP01 Quick size reference guide Women:You need to downsize 1 size on these boots.Example: If you are a Women's 7 you should choose 6 for this boot.