Approximately 3.8cm tall x 4.4cm wide x 7.6cm long with a 8.9cm long tail, flexible outer skin with clear liquid inside.WARNING: Choking Hazard - Small parts. Not for children under 3 inside.WAR a Deluxe Splat Ball - Black Mouse to have fun and to relieve stress. Throw this liquid filled stress ball against a hard, flat surface (glass works best) and it spreads out flat on impact, looking like a squished mouse! Almost instantly, the ball begins to reform to its original shape again. Just imagine what your co-workers will think when they see black slime transform into a mouse stress ball! See all Splat Balls here! Splat Balls should be sticky! Use sticky tape to remove dirt and inside.WARs ball is made up of a flexible rubber outer shell filled with liquid. Puncturing, over-stretching, or twisting the product may cause it to leak or burst. It is not for pets or young children. Liquid ingredients may stain clothing, carpets, fabrics, or walls. Do not leave in sunlight or high temperatures, such as in a parked car. Keep away from computers, keyboards, electronic equipment and other liquid sensitive items and areas.