Adjustable Kettlebell - Version 1.0 by using this adjustable bell. If you prefer a heaver adjustable kettlebell which will continue as you improve your strength and energy, than we recommend you consider the Mir Adjustable Kettlebell.MiR Adjustable KettlebellBleeding edge kettlebell sports athletes know the need for a variable weighted vest, and sports athletes that are looking the very best they are able to get, buy Mir adjustable kettlebells. The Mir Adjustable Weighted Vest fits better and it is easier adjustable than every other design available on the market.