The Catit Senses 2.0 Wave Circuit is the ultimate hunting toy for your cat. The product includes a straight track that allows compatibility with the wider, more stable Catit Senses 2.0 products. This update also results in an amazing new range of 100+ different layout possibilities! The Catit Senses 2.0 Wave Circuit offers elevation for more diverse movements, and is compatible with other Catit Senses 2.0 Circuits (43154W, 43156W), as well as the Catit Design Senses Circuits (50730, 50735, 50736). The Catit Senses 2.0 Wave Circuit includes 1 straight part, 4 wavy curved parts with top opening, 2 end parts and 1 circuit ball. Thanks to the fresh, green style, it matches any home interior.