Crosslinked polyols when applied to woven or non-woven fabrics impart high heats of fusion lower thermal conductivity and several other physical properties. Previous publications have demonstrated that polyethylene glocols could be crosslinked onto a substrate with tetrafunctional cyclic urea compounds. A new formaldehyde free crosslinking system has been discovered using stoichiometric amounts of sulfonic acids and glyokal to form polyacetals with the same polyols. These polyacetals exhibit the same multifunctional properties and are also durable to laundering.