Weight per pair: 4.48 lbs100% waterproof CR-Foam bootie constructionBreathable Airmesh liningRemovable 6mm Nitracel EVA sock linerNatural rubber upper overlaysHands free easy on / easy offEasy clean upStretch-fit topline binding snugs to calf to keep warmth in and cold out5mm CR fl ex-foam bootie with four-way stretch nylon100% waterprooflightweight and flexibleExtended rubber overlay for added protectionAdditional Achilles overlay for added protection2mm thermal foam underlay added to the instep area for additional warmthAdded toe protection with a wrap-up bumperEVA molded midsole with contoured footbed (internal)MS-1 molded outsole is rugged, aggressive and durable for maximum protection and stabilityComfort range of -20 Degrees F to 70 Degrees F