Oooh I'll check them out then, I'll take SIL with me So far I have the one 1.0 tog and I've also bought one 2.5 tog but I'm not sure if I will need it if I have the oil heater in DS's room in winter. I guess I can take the heater out and just put hum in the winter bag . Those oil heaters are so expensive to run! I'll need a couple of 0.5 tog bags for summer (I always buy 2 in case one gets dirty) and I'll need an additional 1.0 tog so I'll look into these cheaper ones. Are they good quality like the grobags?