Good for easy long throws.  My high drive Malinois needs the exercise.  I use&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Chuckit-Medium-Max-Glow-Ball-2-5-Inch-1-Pack/dp/B001B4TV2W/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Chuckit! Medium Max Glow Ball 2.5-Inch, 1-Pack</a>&nbsp;which not only hold their glow in the dark, but are indestructible "just right" for holding and chewing.  Cool and fun&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Planet-Dog-Orbee-Tuff-Whistle-Ball-Dog-Toy/dp/B003WJRGA8/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Planet Dog Orbee-Tuff Whistle Ball Dog Toy</a>&nbsp;works too, but not for chewing.  The colored "tennis" balls are made of toxic materials (which is ingested) and the fur grinds down teeth.