The overall effectiveness of the variable fill was Excellent. Honestly, I did not notice much. It was warm, comfortable, a decent fit for me. The warmth was great. Very well insulated. The comfort of the material and the softness of the fill were great. The head area was flexible and I could adjust things throughout the night as needed. The zipper was smooth and worked very well. It packed well for the backpack-small, light, easy.
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Was this a gift?:
Bottom Line Yes, I would recommend this to a friend