That is completely different. That is an ND Filter for the Mavic Professional within the form of a bubble. You should purchase it right here:
http://www.lightake.com/p/Mavic-Professional-ND-Filters-ND2-filter-cover-cap-lens-gimbal-protection-case-for-DJI-Mavic-Professional-camera-Quadcopter-Drone_MU2210089.html?sku=2207983