the only really important thing in a sleeping bag is the fill power of down, for a given weight.
the higher number, the warmer it will be.
the decathlon is 800 fill
alpkit is 750
seatosummit is a pathetic 600
generally no point buying anything less than 800 fill. so get the decathlon one unless you want to pay less, in which case borrow from friends, or buy a second hand 800+ fill bag
the only really important thing in a sleeping bag is the fill power of down, for a given weight.
the higher number, the warmer it will be.
the decathlon is 800 fill
alpkit is 750
seatosummit is a pathetic 600
generally no point buying anything less than 800 fill. so get the decathlon one unless you want to pay less, in which case borrow from friends, or buy a second hand 800+ fill bag