Description Jersey/Polyester lining: Breathable, moisture-wicking lining for comfort in hot weather. Alpha Construction: Built with hand-laid premium, natural rubber over insulating neoprene for durability, flexibility and complete waterproof protection. Active Fit: With a comfortable, secure fit to keep your foot in place while on the move, boots with Active Fit also go on and come off with ease. Kick-Off Heel Plate: For easy hands-free removal. Agility Outsole: The durable rubber outsole of the Alpha Agility is paired with a midsole constructed from our lightweight LXA compound for optimal rebound and comfort.