
As Chairman Bill has said, the Fitzroy (620g) is probably OTT for 3 season backpacking. The Alpkit Filo (690g) will be very warm, but is definately OTT for 3 season use. Most of the other suggestions will do the job. I use a few of them but carry my Montbell (206g) when 3 season backpacking, because there is nothing warmer for the weight. The fact it is down, is no problem if using it for camp use. I wear it under a wind-shirt.