The X Bag weighs 2.5kg. You can add up to a maximum of 30 kg in standard discs to give you a total weight of 32.5kg. The discs are sold in singles in either 2.5kg or 5 kg weight options. To maximise incremental training, purchase 12 of the 2.5kg discs. This will give you a weight range from 2.5kg (bag only) to 32.5kg in 13 increments. If you only require increments of 5 kg then purchase up to 6 of the 5 kg discs.