They�re Soft and they Squeak! The SOFT-FLEX Swirl Ball for Dogs is the newest addition to our SOFT-FLEX toy line. The SOFT-FLEX Swirl Ball is made with premium, heavy-duty vinyl; longer lasting than any vinyl toy on the market. SOFT-FLEX Swirl Ball features a unique grip-able form that promotes snatch and play on the go for your dog. The squeaker is �molded-in� so there is no secondary piece for the dog to swallow.