RuffDawg Indestructible Dawg-Cube Assorted Colors XL 40 lb and UpDawg Cube Indestructible Retrieving Toy by RuffDawg Rubber retrieving toy floats, bounces, indestructible! The Dawg Cube XL 3. 5 square for medium to large dogs Indestructible with a Lifetime Guarantee. Heavy duty solid rubber Dawg Cubes come in 2 sizes and an assortment of bright neon colors. These indestructible toys float, crazy bounce to activate your dogs chase and retrieve instinct, and take serious abuse during heavy play all while still being