This carrier is wonderful. I have used many - the k'tan when my baby was little, then a sling, and a baby bjorn that someone gave me... I had so many carriers, and still had back pain! At a year old, I figured my baby was just heavy enough that there would be no way to wear him comfortably for extended periods of time. One of my friends got an Ergo and swore by it. I didn't believe it could be worth the money, but when I could get it 20% off I decided to give it a chance. WOW! I literally can wear him for HOURS without hurting. I am so excited - I've planned a hiking trip for this weekend.