I use this product for bushwalking in Australia especially where a lightweight pack is required. Last weekends pack carry was in the high country in Victoria in an area which is subject to extreme weather conditions. Sunday night tempatures were down to 0.C (32 F)with heavy showers. The Inertia X Frame proved to be very comfortable, warm despite the fact a silk liner was used in lieu of the usual
                    
This review was written in the old system and had content requirements that are different than reviews written today.