We outfitted the Alpha Evolution with premium features designed to enhance your performance across the board, and we spared nothing in the making of this boot. With advanced elements like Vibram XS TREK rubber compound, the Alpha Evolution provides superior capability and comfort for discerning hunters. Alpha Construction Built with hand-laid premium, natural rubber over insulating neoprene for durability, flexibility and complete waterproof protection. Made in USA The Alpha Evolution is the outcome of over a hundred years of experience crafting durable, hardworking rubber footwear - and it&&';;s proudly made in USA with imported components. Comfort Liner Quick drying and moisture wicking, our jersey knit liner will keep your feet dry and comfortable. Neoprene Gusset Durable, neoprene gusset accommodates different calf sizes and makes it easy to slide the boot on and off. EVA Midsole We use a rubberized EVA midsole that delivers superior cushioning and shock absorption underfoot. VibramA(R) XS TREK The non-marking, technical compound in VibramA(R) XS TREK allows for optimal traction on wet surfaces in addition to responsiveness on unpredictable terrain. Scent Suppressing There&&';;s no better scent suppressing material than rubber. Our formulas combine absolute comfort with unequaled scent protection. Designed for Extreme Use This style was designed for extreme use and is made with PFAS Chemicals.