Our training playing tennis balls for dogs present you with 6 different color options,and the products are all dyed with healthy,environmental-friendly colourants. Since dogs are not very sensitive in differentiating colors,our designers selected 6 different main colors which are relatively easier for dogs to sense,and the purpose is to serve you with the most enjoyable toys for your little furry friends. This tennis ball could not only be a training ball or a toy ball for your beloved pet dogs,they could also be a special ornament piece for you to decorate your personal space,and since the manufacturing process are all carried out under very strict supervisions,we can guarantee you the best product quality and safety,so please feel free to use our dog toy tennis balls with the consciousness of being well-secured.