I suggest hand washing! Machine washing can cause pilling/fraying.

These are very handy to have around, and if half an ounce is too heavy for you, cut it in half! I have used mine for all of the following:

• Dry completely off after swimming or taking a shower. Just wring it out and keep on drying!
   
• Wipe condensation or rain from a tarp or tarp-tent before packing.
   
• Absorb moisture from wet clothing, improving drying time.
   
• Wash and/or dry dishes.
   
• Use it as a napkin.
   
• Tie a rock in it and throw it over a branch for your bear bag.
   
• Wear it as a headband.
   
• Cut it into blister padding, or bandages.
   
• Use it as a pot holder.
   
• Start a fire with it when nothing else is dry.
   
• Use it as a handkerchief.

Don't forget your towel!!