There are three basic ways sutures for feather sleeping bag

(1)sewthrough，

(2)slanttube，  

(3)overlapingtube，

The first suture is simple, not complex, but easy heat dissipation from the suture line,

The second suture is sleeping most of the sewing method. This method can be cold waiting outside in sleeping bags.

The third is the best of every law, this sleeping bag more expensive, the majority of the design of a sleeping bag channelblocks, it can move around to prevent the feathers.

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