Wellington Quatro Thigh Wader S5 Fo E Hro Src Complete With Studs To Sole, Thigh length, fully waterproof, rubber safety wader S5 safety rating meeting EN ISO 20345 S5, Dual binding for adjustable height, Lightweight, quick drying lining, SureGrip 360 antistatic nitrile outsole with integral digging pad 4mm wool-felt insulated base layer, Quatro Comfort System insole, ComfortForm steel toe cap & steel penetration midsole. for replacement stud kit see product code S09-SSK