Bladders and Footwear Incorporating Bladders in the Foot Supports and Uppers

Bladders for footwear uppers, footwear components including the bladders, articles of footwear including the bladders, and/or methods of making and using such bladders are described. Such bladder systems may include two thermoplastic elastomer sheets joined together at an outer perimeter bond. The outer perimeter bond may be shaped such that the interior chamber of the bladder forms: (i) a foot support chamber portion for supporting at least a portion of a plantar surface of a wearer's foot and (ii) one or more side chamber portions forming at least part of one or more securing straps and/or at least part of one or more footwear upper components. The one or more side chamber portions extend outward from the foot support chamber portion and are in fluid communication with the foot support chamber portion.