Each dice is 4 inches in diameter, 12 sided, and made out of lightweight foam for ease of use. Stay fit, have fun, and never get bored of the same old fitness routine at home or the gym again! Turn your workout in to a game - just roll the exercise cube and see what exercise to do next. All exercises are bodyweight workouts, so no need for expensive supplies and equipment. Perfect for bootcamp or group classes. Basic yet challenging exercises for all adults - beginners, trainers, men, and women. Your workout has no limits - workout whenever, wherever - home, indoor gym, travel, park... Buy yours today and see the difference in your daily workout! Sole risk of injury that might result from the use of the equipment, and any additional selected equipment, would be the entire responsibility of the user. Seek professional medical advice before embarking on an exercise program or if you sustain injury.