The unique microwave slippers are (size is possible for different sizes as indicated behind the product), to achieve an optimal heat distribution all around, filled with a unique mixture of specially treated linseed and dried lavender. By heating the slippies in the microwave for just 90 seconds, you can enjoy wonderfully warm feet and a subtle lavender scent for 2.5 hours. Lavender has a calming, soothing and uplifting effect, while the cozy warmth makes for a better mood. Enjoy and relax in the easy chair, on the couch but also in bed. Please note the slippers are not for walking.