Work Authority - The Blundstone XFR collection stands on a thicker, grippier, solid rubber lug sole for safe, long-wearing, all-season comfort and stability. These CSA boots also have a thicker rubber
![Blundstone Unisex CSA Greenpatch Pull-On Boot Black 10.5 Medium UK : Clothing, Shoes & Jewelry - Amazon.com Blundstone Unisex CSA Greenpatch Pull-On Boot Black 10.5 Medium UK : Clothing, Shoes & Jewelry - Amazon.com](https://m.media-amazon.com/images/I/51o1mNIsLjL._AC_UY900_.jpg)
Blundstone Unisex CSA Greenpatch Pull-On Boot Black 10.5 Medium UK : Clothing, Shoes & Jewelry - Amazon.com
![Well worn pair of 164 CSA. One of the most comfortable work boots to wear on the job : r/BlundstoneBoots Well worn pair of 164 CSA. One of the most comfortable work boots to wear on the job : r/BlundstoneBoots](https://i.redd.it/6q9o6gmnrfvb1.jpg)