Scalable: No

Specifications (length * width) :XS neck 42+(chest 37-46cm),S neck 46+(chest 46-56cm),M neck 52+(chest 54-66cm),L neck 60+(chest 64-78cm),XL neck 70+(chest 76-92cm)

Advantages: comfortable and breathable, not hurting the skin, not stuffy.
Inside: Nine-divided mesh fabric, cool fabrics adjust the temperature by quickly evaporating and absorbing heat,
Adjust body temperature naturally, cool and comfortable to wear.