The for perforated summer you spend, the futon

摘要

(57) Abstract The sleeping in the intended summer in the painful night each time tossing about in bed it does the air enters and leaves from the ventilation holeBecause the ri it does, with being able to hold down the sweat consumption of the physical strength mostIt is held down to the small limit. You can sleep quietly and utilize the vital force to tomorrow it is denseWith the ventilation hole is made in configuration former futon similar ones which it is possible