A tried-and-true remedy that's been passed down through generations, this all-natural wrap is filled with an aromatic blend of herbs -- lavender, chamomile, lemongrass -- which can help relieve colic and other tummy troubles. Place in the microwave and heat for 20 seconds, then place around your baby's tummy. (Always test on the inside of your arm first to prevent burns.)Happi Tummi is the only Pediatrician recommended colic relief waistband that naturally relieves colic and gas pains in moments. How? The heat activated 100% herbal formulation transfers with the babys own body heat bringing baby relief within moments and it is ready to use in 15-20 seconds.