Click to expand Tap to zoom Squeaks Tennis Ball by Hyper Pet Sale £6.99 | / 4 Pack - £6.99 2 Pack - £3.99 Size 4 Pack 2 Pack 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Hyper Pet's Tennis Balls are made of grade A rubber and do not contain harmful coatings or gases. Squeaks!™ Tennis Balls are just as safe as all Hyper Pet™ Tennis Balls, but has a squeaker inside!