a multi - layer liner light weight garment ensemble that offers low bulk , water impermeability , wind resistance , thermal protection , and buoyancy . the core element and essential component of the invention is the light weight sealed air polymer cellular thermal layer , interposed between the inner and outer layers . this central element can be water impermeable and offers both thermal protection and buoyancy effects . the garment ensemble can be used as a light weight thermal winter garment as well as survival apparel for those who work and play in and around water .