At this point in time there is no wide version of the Training Boards. Depending on what your foot size is, you might be able to get away with having your feet at an angle of -15 and 15 degrees, or slightly more.
If your toes hang over a little bit, it’s not going to affect the performance of the product. If it is too much of an issue, take out the inner padding and wear shoes in the Training Bindings when training.
For more information check out the "tech" sections of the product sections: https://snowboardaddiction.com/collections/most-popular-products.