Balance Trainer, Purple with Gray Sides, Black Rubberized Top Designed to improve balance hold stunts. Lightweight and Portable: small size lets you practice at home or gym or anywhere else. Wide base provides safety by preventing tipping. High density, polyethylene foam core. Covered with durable 18-oz vinyl fabric. Big 9"x20" base creates a stable, sturdy foundation for training. Black, rubberized, 4"x8", top surface forces the user to work core and ankle strength to improve body stability and hold duration. Sides are purple and gray. Made in the U.S.A.