When speed is your mode of operation, Belleville side zipper military boots offer the convenience you're looking for without compromising durability or protection. The Air Force compliant 610Z ST features nylon zippers with large teeth for durability. All Belleville side zipper boots feature a Velcro zipper tab holder to minimize keep your zipper safe and secure. All Belleville boots or warrantied for one year against any manufacturer or workmanship issues, including broken zippers. When it comes to on the job reliability whether you are in the military or long, you can depend on Belleville for quality footwear.