Unfortunately, we can't change or cancel orders after they have been placed and sent to our fulfillment center. We recommend following our return process and selecting "Exchange" to request a different size or color. Visit returns.ruffwear.com, enter the email address you used to place your order to see all your orders. You can also enter your order number from your order confirmation email to jump straight to a specific order. You'll be able to print your free return shipping label then track the status all in the same place. For more information about returns please visit our Returns page.