looking for new sleeping bags for dd's 7 and 9yo but quite small for their ages. I was looking at the vanga wilderness ones, are they ok? it will mainly be for brownie camps, only in spring summer and early autunm and not outdoors, maybe one outdoor camp in summer. they say suitable up to 150cm, which I reckon is about 13/14yo is this right or are they small, would I be better off getting adult ones? any other ones that are worth looking at? £25 is about my budget. TIA