Made with 100% polyester, the Bullpen jersey's thick KOMB fabric is soft to the touch but fiercely durable and long-lasting. Pin-dot mesh inserts along the upper sides and under the arms circulate air through the jersey, cooling athletes on hot days. This convenient pullover jersey comes with a mitered v-neck collar for a comfortable, modern look. Created with DRI-GEAR technology, which wicks moisture away from the body, keeping the wearer cool and dry. Available in Adult sizes S-3XL and Youth sizes S-XL in 10 colors with contrasting graphite and white mesh inserts along the sides and under the arms.