Macarons are delicate pastries, and should be kept refrigerated until 20 minutes prior to serving.
Mon Ami Macarons may be refrigerated for up to 5 days. Most flavors of Mon Ami Macarons can even be frozen for up to 6 months as long as they are packed in an air tight container. When you are ready to indulge, defrost the macarons in the refrigerator.