Lacrosse Pac 12" Insulated Boots With Steel Toe Size 10. When you need to rely on protection from the mud, grime, and rough terrain underfoot, our Pac boots have you covered. Featuring a cushioning EVA insole, steel toe, rubber toe guard, waterproof lining and ankle fit technology that grips your foot and locks your heel in place. It's built with our proven rubber formula that's resistant to tears, abrasions, and a hard day's work in hazardous conditions.