more stand out features: compatible with the Mountain Buggy carrycot stand compatible with duets manufactured from 2012 onwards Offering versatility and parent facing longevity all in one key accessory, carrycot plus delivers innovation at its best. With three parent facing seat solutions from newborn to 3 years, including; a lie-flat mode, an incline mode for babies with reflux and a parent facing seat mode which holds up to 15kgs / 33lbs.