Special design compatible with for DJI OSMO Action 3 camera It could reduce the noise effective when you recording the video Made of special sponge material, which is very soft, lightness, portable & flexible Precise hole would not impact the video effect, restore the real sound quality Adapt to various of scene and sport, especially the gale weather & strenuous exercise Packing List: Foam Windslayer Windscreen Case*1 Notes: 1. Due to the different monitor and light effects, the actual color of the item might be slightly different from the color which is showed in the pictures. 2. Please forgive a slight measuring deviation due to manual measurement.