Did not seem to work for my 1 month old with gas and tummy aches, however that may just be his development and age and not necessarily colic. I will say that it is a nice quality design and the bag smells great- even if it doesn’t work for your little one, it’s a nice little heating pad to have around the house for stiff neck or sore muscles or even sinus headaches.
Quality product but did not help my little guy