Weights can be added to any of our bases, Competition or Training. Look for the options on each product detail page.
As of 2011 weights are removable, using 2 screws (just like connector screws) per weight. You can use your weights in one venue and remove them for another. Or you can simply remove them for easier portability.
A full set of weights increases the total weight by about 75-90% depending on the product.