12-Pack KEVENZ Green Advanced Training Tennis Balls ，Practice Ball ( Interlocked wool fiber)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Sold in Sets of 12，Ideal ball for all levels of tournament and recreational play </span></li><li><span class="a-list-item"> Extra Duty ideal for longer play on hard court surfaces </span></li><li><span class="a-list-item"> Natural rubber for consistent feel and reduced shock </span></li><li><span class="a-list-item"> Interlocked wool fiber for longer wear </span></li><li><span class="a-list-item"> Deep elastic seams for reduced cracking </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51GDIlp%2BI6L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51gQW5xZq6L.jpg" noproxy>