Honoring the classic slip-on silhouette, Danner crafted the Romeo II with a rich full-grain leather upper, a spacer mesh liner for breathability, a Vibram gumlite outsole and Fatigue Fighter footbed to provide all day comfort underfoot. Famous Danner Stitchdown construction provides the stability and durability synonymous with a Danner boot. Durable, full-grain leather upper. Breathable spacer mesh lining. Cushioning Fatigue Fighter footbed. Strength and stability of Danner's hand-crafted stitchdown construction. All day comfort from the lightweight Vibram Gumlite outsole. Electrical hazard protection ASTM F2892-11 EH.