The present invention relates to an emulsion polymer that is multi-valent ion stable. The flyback converter is operated in a critical conduction mode to turn onoff a main switch at a zero crossing point of an output voltage. The garments having such stretch fabric portions include pants-type garments, bib overall type garments, and coat-type garments and coverall-type garments. Bond-wires are used as resonators in the oscillator tank for the VCO. A side-chain crystallizable polymer such as poly, that is solid below the base temperature and is a viscous liquid above the activation temperature can be employed.