Protect your investment and stay concealed in the field. The LensCoatA(R) for the Sigma 300-600mm f/4 DG OS telephoto lens helps safeguard your valuable equipment from scrapes, bumps, dust, and harsh outdoor conditions while preserving its appearance and resale value. By breaking up the recognizable shape of your lens, it also helps make your gear less noticeable to wildlife during photography. Constructed from premium neoprene, the LensCoatA(R) provides dependable protection while acting as a thermal barrier, making your lens more comfortable to handle in both hot and cold temperatures. The cover features clear plastic windows over the AF and OS controls, allowing easy visibility and access to essential functions while keeping the lens protected. Choose Your Variation: 1. Classic Version (Slip-On Style) Design: Traditional solid-ring slip-on design with a fixed custom glove-like fit. Installation: Stretches directly over the lens barrel for a secure, close-fitting cover that stays in place during use. 2. V2 Version (Velcro Quick-Wrap Style) Design: Upgraded heavy-duty Velcro closure system for easy on/off. Flexibility: Quickly remove or change the cover when switching camouflage for different shooting habitats or seasons, making adjustments, or when the cover needs to be dried or cleaned. Installation: Opens, wraps around the lens barrel, and fastens securely in seconds without stretching or pulling the cover over the lens. 3. Ultimate Combo Pack (Includes Both!) What you get: Both the Classic and V2 covers included together. Why choose it: Get the fixed custom fit of the Classic along with the convenience of the V2. Instantly switch styles or camouflage patterns to suit different shooting habitats and seasons, and easily remove the V2 cover when it needs to be cleaned or dried.