A seamless athletic bra includes different regions with different levels of support. Also disclosed are a pump including a gear system to change the torque of the lifting auger, and a method of mixing an additive with a liquid stream for fire fighting; pressure washing; spraying pesticides, fungicides, or antibiotics; spray application of fertilizers; abrasive water jet cutting; and spraying food in fish farming. The rim includes a sealing bead that is configured to sealingly engage the opposite sidewalls of an inflatable tire. The latching slot includes a first latching end and an opposite second latching end. This mating may prevent the lid from being misconnected with the socket during manufacturing or repair. The negative feedback circuitry causes the steady-state gain of the half-latch to remain high so that the overdrive voltage needed to change the state of the half-latch is significantly reduced.