Patent ID: 8507071

Claim:
A sheet insulator may be attached to an item of wearing apparel for thermal insulation thereof, the sheet insulator comprising: a fiber reinforced aerogel composite encapsulated within a primary plastic sheeting, the primary plastic sheeting secured to an exterior surface of the aerogel composite; the primary plastic sheeting and the aerogel composite mutually bonded by a bonding agent; a surface of the primary plastic sheeting and the aerogel composite having mutual upsets comprising elongated depressions; a secondary plastic sheeting bonded to the primary plastic sheeting thereby covering the elongated depressions, the secondary plastic sheeting punctured by a plurality of first holes having a first orientation, the first holes arranged in coincidence with the elongated depressions; and a plurality of second holes in the secondary plastic sheeting, the second holes having a second orientation substantially perpendicular to the first orientation, whereas when moisture enters into the depressions through the first holes the depressions direct the moisture to one or more of the second holes wherein said moisture is able to escape through the one or more second holes.