●THICK DURABLE DESIGN The RPM Power rubber medicine ball is made from a resilient, rugged shell that is rotatively shaped for a seamless design to create a durable design that can last for years of consistent use. ●ECO-FRIENDLY MATERIALS Made of environmentally friendly odorless rubber. This medicine ball is a high density ball that improves durability and appearance, making it perfect for muscle toning and improving coordination. ●GRIP SURFACE The textured rubber shell of the medicine ball rotates for a seamless construction that ensures you can grip the ball perfectly even with sweaty or wet hands. ●BUILD STRENGTH & STRENGTH: Training with a medicine ball will build strength, improve your muscle mass, while also working your endurance and cardio level through repetitive movements that require continuous effort.