Set of two 100% new zealand wool dryer balls measuring 3″ diameter. Each set is packaged in a 100% cotton drawstring bag sewn in fair trade conditions. Dryer balls are the environmentally friendly alternative to dryer sheets! Simply place them in the dryer with clothes and reduce dry time by 25%! Felt dryer balls also fluff up clothing while absorbing moisture, lessen static, and are biodegradable. Add essential oils to make clothes smell great.