The Speed 77 RSL Tourney Supreme Badminton Shuttlecock comes in a variety of colors. This shuttlecock's base material is reclaimed cork. It is perfect for both novices and experts.It is made of duck feather, which weighs 0.8 grams and is of grade A quality. The shuttlecock is of excellent quality, and its ideal design offers great speed and accuracy. The design increases stability and rotational speed.