US Patent 9301554 Clothing systems having resistance properties

A weighted article of clothing having cooling properties, comprising a clothing substrate with weights attached thereto, the weights being made of a gel and being strategically placed so as to not interfere with the movements of a wearer and to not interfere with outer clothing or equipment worn over the weighted article of clothing and with the weights being arranged in a plurality of weight clusters and linking strands, with neighboring weight clusters being connected together with the linking strands. An exercise and training device for swimmers in the form of a shirt, top, or singlet that, due to the material of manufacture, increases the resistance to the swimmer's movement through the water.