The universal comfort strap prevents fatigue thanks to its ergonomic design and wide neck section. Whatever the weather, your comfort is ensured through the use of high-performance materials. The universal comfort strap can be quickly and intuitively adjusted to the length you need via a quick-lock clasp on each side. Standard size is suitable for all AX Visio, NL Pure, EL, and EL Range binoculars with FieldPro package. Range size is suitable for all NL Pure, EL, and EL Range binoculars with FieldPro package.