The "Fall Flat Dumbbell" is designed with extended ends to prevent it being able to stand on its end after been thrown and provide a fuss free place for the trainer to hold the dumbbell in the early training phase. It also has useful string chords to aid in the training of the dog's grip and hold.   It comes in a range of colours and sizes - purple, green, yellow, blue, pink, orange and black.  The size of the dumbbell is  determined by the width of the central bar in between the dumbbell ends.  The best 'fit' for your dog is a snug fit.  A bar width too wide for the dog's mouth will make the dumbbell unbalanced and can create mouthing and re-biting.  There are many widths to chose from but they can also be made to measure for your dog using different combinations of chord and extended end colours.  If you require a bespoke size email vikki@trot-n-treat.com