The Men's 11" Nano Composite Safety Toe Pull-On Work Boot with MetGuardâ„?was made for serious comfort. Handcrafted in full-grain leather. this boot features a Nano Composite Safety Toe. For stability and durability. Twisted X® has combined a compression-molded sugar cane molasses EVA midsole with integrated Twisted X® CellStretch® comfort technology and a nylon/glass fiber shank. The oil and slip resistant molded rubber outsole provides durability and improved traction for whatever your day may bring. Twisted X® Work footwear provides all the comfort. stability. and durability that you need to outperform any demanding work environment.