14 inch Rubber insulated mining boots. Waterproof natural rubber boot, blended for a greater abrasion, tear, oil and acid resistance. Rigid internal metguard protection, CSA certified. Steel toe protector and composite puncture-resistant insole. Antimicrobial treated lining. Insulating EVA removable insole. Very insulating and comfortable removable triple density insulation liner (S22080 B11) with Lock-Fit Ankle Support System increases comfort and prevents ankle rollover. 90° heel angle. Natural rubber outsole designed for great stability and resistance. High visibility reflective inserts. Adjustable collar with lock closure system.