]Simply pop them in a microwave for 90 seconds to provide up to an hour of soothing warmth and comfort. Pick up Oprah’s Favorite Microwaveable Slippers for $19.99 (was $39.99). 9 styles. Shipping is $4.99 for the first item and $2.99 for each additional item. US only. Seller usually ships within 5 business days. Ships no later than Wed, Dec 18. This one is from Jane and good for a limited time.