We bought a single deluxe wool duvet 4.5tog for our daughter who is almost 2 years old. She has just moved into a single bed and we wanted a duvet that would last her a long time. Currently she's only sleeping with it at nap time and still using a sleeping bag at night, so we're not using it all the time, but she loves it and we're really happy with it. One benefit of the deluxe duvet is that it's machine washable, so if she were to have accidents we can easily wash it. We had great service from the woolroom staff who phoned back to answer questions and gave excellent advice on their products. I would highly recommend the woolroom for anyone looking for the best products.