This an awesome product, I have a similar one , from another company that I purchased for sitting on the porch in Northern Michigan winters..it was okay as long as I had thermal leggings and a coat underneath it. This one rocks!!! I was outside tonight in 30 degree temps with a t-shirt and lightweight leggings on underneath this and I spent 4 hours outside and never got cold!!!!! And I love how easy it is to pack down into its storage bag, in fact I just ordered one to keep in my truck and will be ordering more as gifts for some of my northern Michigan friends to keep in their vehicles!!!!!