K9 Sport Sack Booster Block Variant:Med/Lrg hold one end of the

hold one end of the bone offered to your pet to help them learn how to chew properly

The ingredients are non genetically modified and free of any chemicals & preservatives

Blessed Thistle herb (Cnicus benedictus):  A long-used traditional plant

Supports antioxidant function

K9 Sport Sack Booster Block Variant:Med/Lrg hold one end of theK9 Booster Block Sizing your dog for a K9 Sport Sack isn't an exact science. If your dog is in between sizes, has a wide body but short in length, or is still growing, the Booster Block fits snuggly in the bottom of your K9 Sport Sack to boost your dog up 3" (7. 62 cm). It helps make the K9 Sport Sack experience more comfortable for you and your dog. Features Constructed of sturdy, quality foam Removable, washable cloth cover Use two blocks for a 6"