Grangers 30 Degree wash is ideal for garments such as ski & snowboard jackets & trousers that have DWR water repellent treatment that needs restoring or needing a coating adding. Long lasting formula This is a new advanced wash in formula, which increases the Durable Water Repellency & breathability of all outdoor fabrics. This new formula means that heat application is no longer necessary. FEATURES Adds & restores DWR coating to all synthetic fabrics ensuring optimum waterproofing & breathability Long lasting, effective through several subsequent washes Air or heat dry Protects from oil & dirt Recommended for Gore-Tex®, e Vent & all waterproof breathable clothing