Material: Nylon weight: 105gsuitable for upgrading ach helmet interior cushions and suspension systems. Fit for fast helmets, ach much, ibh helmet series structure, and so on ...Including 4 sets of solid screws, easy to install-nape suspension is developed to improve safety and portability while improving the stability of the ach structure which use much helmets. The ergonomic design bring more comfortable-nape hanging system strictly according to by force than design, system extremely stable. Convenient single hand wearing adjustment helmet. Line of design elimination has bandages ends loose phenomenon frizzled feather skin effect of chin supporting and neck pad up to has very good of support and comfortable sex, helmet use in severe environment more secure bandages woven material is more durable and ventilated comfort .