Abstract: The invention generally relates to footwear for sports, and particularly to a footwear system for improved athletic performance. The invention provides a footwear system for athletes in which elements provide padding and prevent slippage between an athlete and the ground. The elements are arranged according to precision measurements of maximal stresses that occur between the sole of the feet and the ground during an athletic performance. Using a system of the invention, an athlete avoids unpredictable slippage during a performance and also positions their feet consistently, with the result that performance is consistent and commensurate with equipment choice and physical abilities.

Abstract: The invention generally relates to footwear for golf, and particularly to a footwear system for improved athletic performance. The invention provides a footwear system for golfers in which shoe-cushioning elements and sock-cushioning elements interact to prevent slippage between a golfer and the ground. Cushioning elements are arranged according to precision measurements of maximal stresses that occur between the sole of the feet and the ground at different moments throughout a golfer's swing. Using a system of the invention, a golfer avoids unpredictable slippage during each shot and also positions their feet consistently shot-after-shot, with the result that ball travel is commensurate with club choice and physical abilities.

Abstract: The invention generally relates to audio headphones. In certain embodiments, an earbud headphone assembly is provided. The assembly includes a sound chamber and chassis configured to enclose the sound chamber.

Abstract: The invention generally relates to audio headphones. In certain embodiments, an earbud headphone assembly is provided. The assembly includes a sound chamber and a region on the sound chamber adapted to grip an ear.