Product DescriptionHIGHLINE™ is a classically styled full rubber wellington with side bellow to allow width adjustment around the calf. TRAK™ sole pattern - deep tractor like tread gives powerful traction on soft ground with prominent heel for downhill braking. HEXZORB™ TECHNOLOGY - insert in the heel that acts like shock absorber and reduces impact pressure on hard surfaces. 6mm NITROCELL™ FOOTBED - provides both cushioning and also insulation from the cold. COMFORT RATING -10ºc to +20ºc. Grubs Highline Wellington Boot