Kyjen Company Invincibles 4 Squeak Gecko Blue - 17 Inch STUFFING FREE & SQUEAKER FILLED: No stuffing = less mess and more fun. We took out all the extra fluff from these durable toys and stuffed them with what matters most: Invincibles Squeakers! KEEPS SQUEAKIN IF PUNCTURED: These durable dog toys are filled with Outward Hound Invincibles Squeakers that Keep Squeakin If Punctured giving you and your dog more fun & extra squeak during playtime. CHEW SHIELD: Dogs just dont like to play, they like to play hard! Thats why we made Invincibles Geckos with a Chew Shield layer and strong binding to help keep tough chewers playing & pet parents happy!