CAT Caterpillar Powerplant SB Wide Fit Safety Boots Steel Toe Cap Size:6 SB indicates the boot has SB indicates the boot has a steel toe cap tested to 200 Joules impact and 15 and workplace debris Slip Resistant Outsole (SRA) Reliable traction tested on wet ceramic tile with cleaning agent for safe footing Water Resistant Upper Premium full grain leather resists water and moisture to keep feet dry during work Cushioned Insole Comfortable padded footbed provides support and reduces foot fatigue during extended industrial shifts Shock Absorbing Midsole Energy absorbing technology reduces impact on joints and provides all day comfort Full Grain Leather Upper Industrial grade premium leather construction ensures exceptional durability and professional appearance Padded Collar & Tongue Enhanced comfort padding around ankle and tongue prevents rubbing during demanding work Antistatic Protection Dissipates static electricity to protect sensitive equipment and reduce spark risk in industrial settings What does SB safety rating mean For extreme heat environments like foundries