The B1™ Proximity Pants build on the dependable foundation of the B1™ line by adding a highly reflective aluminized layer, designed to shield against intense heat and extreme conditions. Reinforced knees, durable Stedshield® cuffs, and a Kevlar®-lined expansion pocket ensure rugged, functional performance in demanding environments. High-visibility reflective elements further enhance safety when conditions are at their most challenging. Offering proven durability with elevated thermal protection, the B1™ Proximity Pants provide essential reliability when the heat is on.