GRISPORT – BOA WOLF 6″ Vibram Waterproof Composite Toe Safety Boot – 702381 Recommended for a wide range of industrial and work service applications for those who demand a premium outsole for their work boots. The BOA® lacing system offers on-the-fly adjustment. Get easy, one handed lace tension adjustment with a quick turn of the BOA® dial. Dial in the perfect lace tension for a custom fit with no pressure points. Once tension is locked in, BOA® reels and laces stay that way. Offering excellent durability, BOA® laces are made from aircraft-grade stainless steel, which is stronger per gram than tank armor. BOA® laces are easy to clean and they shed mud, dirt and grime, and can be easily washed.