We ordered the new Superlight Summer duvet and was quite concerned on arrival that it would be warm enough - it was so 'thin' and lightweight. It looks like just two pieces of cotton cloth sewn together and any filling is hardly detectable. However, it is the best duvet we have had. My husband has COPD and I have recently been diagnosed with asthma. So I guess the duvet does what it says on the 'can'! I shall now be saving up to buy something a little warmer for the winter months and maybe looking towards a full wool 'system' as funds allow. Perhaps one of the best things about buying from the Wool Room has been the excellent communication with Zoe. I tried the online chat too as I am well aware that small companies can be overstretched and the last thing office staff need is a lot of customer phone calls. Any form of communication has been excellent with this company. (But then I am Yorkshire born and bred and this company is very close to my old stomping ground!) Good on yer The Wool Room. Sithee soon....