Make your fitness ball even more versatile with this smart cover that easily transforms the ball from a training tool to a comfortable sitting ball for the office. This cover is tailored for balls with a diameter of 65 cm and is weighted at the bottom for extra stability.Multifunctional Use: Switch smoothly between exercise and office work by adding this versatile cover to your fitness ball.Ideal for office use: Create an ergonomic seating area that improves posture and strengthens the core muscles during the working day.The weight at the bottom: The cover is equipped with a weight at the bottom that ensures stability and prevents unwanted movements.Fits 65cm Balls: Precisely designed for balls with a diameter of 65cm for a perfect fit.