This Realtree Max4Lens CoverfromLensCoatfits a Sigma 150-600mm f/5-6.3 DG OS HSM Sports lens, and covers it with a 100% closed-cell neoprene coat that protects the lens from bumps and scratches to preserve its value and condition. Its insulated design provides a thermal barrier to protect the hands when working in colder temperatures, and it is also waterproof to benefit working in inclement weather. For maintained control and usability, clear UV-PVC windows cover the autofocus and image stabilizer controls, as well as the distance scale. An extra piece of covering is also included for protecting the exposed portion of the lens when it is fully zoomed out; this piece can be quickly attached to the main covering with the use of touch fasteners. Suited for photojournalists and sports shooters, this cover also breaks up the shape of the lens to make it beneficial for wildlife and nature photographers as well.