Increase your training intensity with the Li-Ning Bolt Neo Nylon shuttlecock! A technically sound shuttle carefully crafted with excellent precision to provide immaculate flight and enhanced durability. Its fully synthetic base cork is made from the highest quality EVA making it a must-have for everyday badminton Games. **Note** - Refer to this list to select a shuttle suitable for your geographic conditions. Fast Speed - Red Cap - Cold Conditions Medium Speed - Blue Cap - Normal Conditions Slow Speed - Green Cap - Warm Conditions