This may be a little weird , no mental picture please . Spare your selves the unpleasantries . I recently purchased a heavy ! wool blanket and while I have yet to get out in the woods with it I have been testing out how to use it . Seems as though the blanket actually has to warm up to body temperature . I've used it as low as 45ish at one point dressed in jeans and a sweatshirt . I know cotton right , I never actually wear it in the field . But it seemed to take longer to get warm in these particular garments than it did in just polypropylene thermals I wore underneath , or naked for that matter . Before trying the later option I opted to add a worn thin fleece sheet next to my skin , nothing I would have even remotely considered insulating as a stand alone item at those those temps . And definitely not in the buff in camp normally . What have you learned about using wool for bedding while camping ? I learned how to properly wrap in one to achieve layers using one or more . Honestly if it came to needing multiples and I suspected the need for more than one I'd more than likely just pack my Kokoram down bag and my GI bivvy and Klymit static V and save space and weight . Edit : I just realized this should have been in sleep systems .