I think my daughter might like to go camping with me. Shes 13 and about 5'5" and slim. I think she could carry most of her own gear but the problem is that she would want to bring everything including the kitchen sink. I had also thought about letting her walk a couple of blocks with what she thinks she needs to take and after her walk she might come back to earth or decide she couldn't live whitout her stuff.???? Although she uses a north face pack as a book bag and it is usually very heavy. I would say 20 to 30lbs.
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Enjoy your next trip...