Fat Brain Toys Tobbles Physics interplays with design perfection with this vibrant set of six wobbling, wiggling, spinnable, stackable spheres; a design-savvy conversation piece for parents, a brilliant playtime experience for children Balance them, nest them, spin them, stack them up in all kinds of gravity-defying angles; watch them wobble, tilt, wiggle, and roll; ideal for busy, curious children Playtime perfection for children ages 2 and up; fully safety tested; made with high quality ABS plastic; BPA-free; built exceptional strong to stand up to endless toppling and dropping Inspires sensory exploration, imaginative thinking, creativity, experimentation; strengthens fine motor skills, coordination, visual-spatial acuity; creativity and innovative play take on a new spin! Winner of Major Fun Award for Toys, Dr. Toy 10 Best Creative Products Award, Parents' Choice Recommended Award, Parents Magazine Toy of the Year, and more; Includes 6 dual-colored spheres and a base to stack them on Creativity Innovative Play Sensory Exploration Fine Motor Skills Coordination Visual-Spatial Acuity Open-Ended Play Weighted Dual-Textured Surface Early Physics Lessons