Specially treated microfibre fabrics such as waterproof sports and outdoor clothing are best cleaned with Soap Flakes or Liquid Soap. Regatta, the family outdoor clothing brand recommend using Dri-Pak Soap Flakes when washing Isotex fabric garments. Soap Flakes are so gentle they will not affect the performance of the garment.
Soap Flakes are also recommended for cleaning wet suits, without affecting their properties.