Six core selling points: 1, 360 ° multiple cervical neck,
2, after the former high low design, with ergonomic design, to avoid ajaw oppression,
3, laminating, curvature of cervical vertebrae curvature of 20 ° back head natural back neck curve joint,
4,porous thermal design, wear is not hot, convenient people use intubation, fixed
5, Velcro, convenient adjustment,
6, close skincomfortable fabrics, soft