Hello Elephant Door Mat, Yoga Door Mat, Housewarming Gift, Wedding Gift This mat is made of recycled coconut coir with durable backing to help keep the mat in place. Mat has a measurement of 20x30 inches. Shedding will occur at the beginning due to use of natural fibers & can just be shaken out or vacuumed. This mat can be used outdoors but it is best used in weather protected areas. Returns/Exchanges We do not accept returns or exchanges, if their is any issue with your mat please contact us so we can resolve an issues. Hello Elephant Door Mat, Yoga Housewarming Gift, Wedding Gift