It is undeniable that down is the most superior among all kinds of thermal insulation materials, all because of its softness The structure and can be folded extremely small, but the quality of down is very variable, only high-quality down has these advantages. Therefore, mont-bell specially selects 590 and 650 grade goose down from North America, and has been strictly cleaned and disinfected. , And selection and other processes before the finished product is produced to ensure that the down products are stronger than others and have good moisture...