<ul class="productmiaoshu"><li><span class="a-list-item"> ★A7★ Material: White Duck Feathers + Compound Cork Head </span></li><li><span class="a-list-item"> ★A7★ Suitable for: Training, Leisure and Entertainment, Not for Match </span></li><li><span class="a-list-item"> ★A30★ Material: White Goose Feathers + Compound Cork Head </span></li><li><span class="a-list-item"> ★A30★ Weight: 5g (Per Shuttlecocks). </span></li><li><span class="a-list-item"> In order to improve the service life of the badminton in the low temperature or dry climate, you can increase the humidity of the feathers by some water vapor before playing, but do not spray some hot water to the feather pieces </span></li></ul>