This 3D-printed squishy toy is designed as an ergonomic, flexible fidget cylinder featuring a complex, open-lattice gyroid structure. Modeled after flexible TPU , it offers a rubbery, compressible texture that easily rebounds when squeezed. Its advanced, wavy internal lattice pattern maximizes tactile feedback and airflow, providing a unique sensory experience compared to traditional solid stress balls. The compact, cylindrical sleeve shape is engineered to fit comfortably within the palm for discrete, repetitive gripping. It is rendered in a deep, vibrant cobalt blue finish that highlights the intricate, layered shadows of its 3D-printed geometry.