PolarguardÂ® 3D continuous filament polyester has the characteristic durability and warmth for which the Polarguard name has become known. Unlike cut staple insulation, Polarguard 3D will not mat, clump or pull apart. This eliminates the chances of thin or cold spots developing in the insulation. Polarguard 3D has a finer filament denier than other Polarguard products, which makes it softer and more compressible, with added warmth. Its high void triangular cross section prevents collapse after extended use. These features make Polarguard 3D particularly suited for use in apparel insulation.
Polarguard 3D has superior insulating ability when wet. In an independent study of sleeping bags, comparing Polarguard 3D, down, and a premium cut staple insulation, down lost the most insulation. In heated manikin testing of wet sleeping bags, Polarguard 3D proved to be 12 percent warmer than cut staple, and 28 percent warmer than wet down. The ability to maintain high insulative value when wet is inherent to the hydrophobic features of Polarguard.