82mm ND2-ND32 (1-5 Stop) Variable ND Filter and CPL Circular Polarizing Filter 2 in 1 for Camera Lens No X Spot Weather Sealed Nano-Xcel
SKU: KF01.1088
A
Alternatively, you can buy neoprene slip on lens covers too. I ran I to the same issue when I bought my VNDF and opted for the neoprene covers instead of plastic lens caps. They work great, just a suggestion.