Which sleep bag would you get?

[moonsky]

My friend in UK is buying us a gift for DC#2. I am thinking about one of these sleep bags. Which one is your choice?

1. Disana organic wool sleep bag

http://www.cambridgebaby.co.uk/catalog/merino-wool-sleeping-disana-p-54.html

I like that it is organic, but it looks thick. DC likes to walk with sleep bag around the crib. The one we have is very thin.

2. Merino Kids sleep bag

http://www.naturalbabyshower.co.uk/merino-kids/merino-kids-go-go-bag-oatmeal.html

It looks nice and thin but it is not organic. I heard some wool may contain arsenic?

3. Grobag

http://www.naturalbabyshower.co.uk/gro-group/home-grown-baby-organic-grobag.html

http://www.naturalbabyshower.co.uk/grobag/organic-grobag-home-grown-baby-2.5tog.html

They are also organic and do not need special detergent. But we will need two - one for fall and one for winter. They are not as natural as the first two because of the polyester filling.

Which one would you pick? Any others I miss? I prefer natural/organic one. TIA!