The Schoeps B1d windscreen:

classic hollow foam windscreen
standard for many applications
recommended for conference, against wind and against the moving noise on the boom

The B 1 D is an elaborately constructed, highly efficient pop shield with a closed metal gauze construction.

As with the B 5 D and the windscreen baskets, the sound openings of the microphone are enclosed by an air volume. Compatible with all axially addressed microphones from SCHOEPS.