My son is 15 months and prefers walking over stroller rides now. I can't let him walk everywhere (we'd never be able to go anyplace!) so I'm hoping to find a backpack carrier that allows him to sit up high. I have a Beco Gemini that worked great as an infant carrier but he wants to see more than it allows him to do now. Something lightweight and portable is key - we don't plan on using this for hikes, just strolls around town, and for our trip to Hawaii next week.