Dynamic filtration systems and associated methods are disclosed herein. The determination of these expectancy ranges takes place in consideration of the temporal behavior of past echo data. A multiport body is secured to the band and includes a multiport fluid exchange route fluidly communicating between a first port and at least a second port of the body’s ports. Preferably, the payment is an electronic payment and the account is established with at least one financial institution. A first level of the button hierarchy comprising one or more first level buttons is displayed with a lens further displayed on a given one of the one or more first level buttons, the lens operative to present first level data for the given first level button. This footwear consists of socks whose soles are coated with an elastomeric material that uses body heat and weight to provide the \u201cfeel\u201d of a second skin.