Abstract: Garments may include: (a) one garment portion having an air permeability of less than 550 ft3/min per ft2; and (b) another garment portion including one or more vented zones, wherein a material forming the vented zones has an air permeability of at least 550 ft3/min per ft2. The vented zones may extend along a center back portion and/or along at least one side portion of the garment. Methods for forming such garments may include: (a) providing one garment portion having an air permeability of less than 550 ft3/min per ft2; (b) providing another garment portion including at least one vented zone, wherein a material forming the vented zone has an air permeability of at least 550 ft3/min per ft2; and (c) forming a garment structure including these garment portions. The vented zones may extend along a center back portion and/or along at least one side portion of the garment structure.

Abstract: A article of apparel for moderating the body temperature of an individual is disclosed. The apparel includes a torso region for covering at least a portion of a torso of the individual. A plurality of cavities are distributed throughout the torso region, and a plurality of thermal inserts are positioned within the cavities. The thermal inserts may be bladders that enclose a fluid. A fitting system extends at least partially around the torso region. Instructions for utilizing the article of apparel may also be included, with the instructions being permanently secured to the article of apparel.