Gaiam is very flexible about returns and exchanges. You may return or exchange any item provided they are unopened and unused within 30 days after your purchase.
All you need to do is fill out the return info on the back of your order form (or download the form on Gaiam's website), pack your unwanted items, and send them to the designated warehouse address. It's recommended to insure your package. Then allow Gaiam 14 days to receive and process your return. The refund will be credited to the original payment method.
Be aware, original shipping and handling fees are not refundable.