Lonsdale omniflex freestanding punch bag this lonsdale heavy punch bag comes in a free standing omniflex design just fill the base with water or sand to weigh it down and get training the freestanding punch bag has an adjustable omniflex design means that you can get a full body intense fitness and boxing workout just adjust the height for kicks knee strikes and punches whilst the durable outer shell takes the impact and is complete with the lonsdale branding and logo for a professional loo