Base K-Rush B1005 S1P HRO SRC work shoes in black and yellow, size 41.BoA fastening and revolutionary i-daptive systemi-daptive is an intelligent system that adapts to the foot to provide an incredible sense of dynamic comfort. The i-daptive system works on several levels:provides stability to the foot and, in the event of small lateral oscillations, corrects the axis of the foot, returning it to its optimal position makes walking easier, giving smoothness to the transition between toes, through a modular process called "variable geometry"adapts to rough, uneven ground surfaces, acting like an active suspension that cushions and reduces repercussions on foot stabilityi-daptive has a variable behavior, which changes depending on the type of work, to ensure safety and comfort in all conditionsFeaturesAntistatic footwearResistance of the instep of 200 JPuncture-resistant soleAmortization under the heelResistance to heat for 1 minute up to 300°CResistance to hydrocarbonsOrthopedic and tailored insoles, Compliant with European standards DGUV112-191MaterialsOppers: Breathable materialLining: Anti-odor and anti-microbial SmellStopMidsole: Fresh'n FlexFootbed: AluminumSole: i-daptive PU Technology/GRO Rubber.