All Ground Effect clothing enjoys a warm 40ºC machine wash. Try to avoid cold-water detergents and those with bleach, 'oxygen whitener' or fabric softener.
As a rule of thumb, a product that is easy on the planet is also easy on your body. Select a mild plant-based soap like Ecostore, Earthwise or Aware.
Hand washing is sometimes the only option on tour, but a washing machine rinses more thoroughly and is preferable if you have the choice.
Drying on the line or hanging on the bedpost is generally preferable to using a dryer. Most Ground Effect gear dries super-fast anyway. High heat can damage some fabrics so if you must take your threads for a spin set the device on 'medium' or 'warm' rather than hot.
Some additional fabric-specific guidelines...