Sleep System / Sleeping Bag

[I-K-E]

If think of getting a Czech army bed roll system and coupling that with either my 2 season or 3 season sleeping bags that I already own.

not sure why you don't like the system but for me it's about flexibility with out having to buy even more sleeping bags and a it's lot cheaper that buying a quality 4 season bag

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also it is important to have good insulation under any sleeping bag SIMs are good for this but try and get a thick one for home use/car camping