Wool is naturally antibacterial, absorbent, moisture wicking, and doesn't have to be washed after every use. I'm like what? That is too cool, sure you'd want to have more than one to rotate and hang out to dry and all but that is so stinking cool. There are some special care instructions but if I can run a house with 3 kiddos 5 and under I can follow some sort of direction. My friend over at Home Grown Families is hosting a giveaway for A Small Green Footprint.