Blundstone 163 CSA Greenpatch Chelsea in Black checks all the safety boxes so you can focus on the job at hand. Blundstone steel toe CSA safety and dry all-day comfort, even on concrete. Flexible, comfortable and pull-on, kick-off easy to keep mud and debris off car mats, indoor carpets and new floors. Protection from electrical, chemical and mechanical dangers. Unisex Blundstone sizing.