Our Combat CBRN Overboots are designed to fit over your existing boots and provide long-lasting protection from biological threats, nuclear fallout, and chemical warfare agents (CWAs). Combined with a gas mask, hazmat suit and gloves, Key Features of Combat CBRN Overboots Vinyl plastisol construction offers enhanced protection from chemical threats 2mm thickness for durable protection and superior flexibility Provides >24 hours of protection against vaporized chemical threats Impermeable to nuclear fallout and biological threats Rugged one-piece construction Universal fit with almost any combat boot in use today Uses a single strap to ensure a comfortable and snug fit Easy to put on and easy to remove after use 10-year shelf life when stored correctly (see below) Size Guide of CBRN Overboots Model S Overboots Size Chart (in) Order size Unit of XS SM MD LG XL European size Measurement 41 43 44 45 46 Outer soles length in 12.20 12.52 12.91 13.39 13.70 Height in 10.55 11.02 10.75 11.10 11.10 Soles width in 4.72 4.92 4.92 5.04 5.12 Weight of each pair lbm 2.20 2.31 2.54 2.69 3.09 Technical Specifications for Combat CBRN Overboots Fitting over your existing combat boots, our Combat CBRN Overboots add a layer of practical protection from CBRN threats-without sacrificing the flexibility or mobility that matters most. Our Combat CBRN Overboots feature a unique vinyl plastisol construction. The material has a dense chemical structure that boosts resistance to chemical warfare threats while remaining impermeable to nuclear and biological threats. It&&';;s a tough but flexible material that&&';;s perfect for this kind of application. These overboots are designed to be easily donned or removed even when you&&';;re wearing thick hazmat gloves. The single strap closure is attached to the overboot to ensure a snug and comfortable fit. Weighing in at less than 4.4lbs total, they won&&';;t impede tactical maneuvering or long-range capability. And they&&';;re durable enough to be worn multiple times (decontaminate as needed). Combining protection you can count on with the flexibility you need to get the job done, MIRA Safety Combat CBRN overboots are the perfect fit. Technical Details for Combat CBRN Overboots Thickness 2mm+ Tensile Strength 9.5 MPa+ Elongation at Break 350%+ 100% Proof Strength 3.1 MPa+ Shore A Hardness 63 Butyl Overboots Storage MIRA Safety Combat CBRN overboots should be stored in their original packaging in a dark room at a temperature between 32AdegF and 86AdegF (0-30AdegC) with a relative humidity of less than 80%. This overboot can be stored for ten years or longer in these conditions. These CBRN overboots should be protected from sunlight and stored away from chemicals and solvents. Overboots may be stacked.