To assure you order the correct size chinstrap, measure the distance from the top of the headgear strap you plan to attach to, around the chin, and to the heagear strap you'll attach to on the other side (see photos).
- The standard RipVW100 ChinStrap adjusts from 7" to 12" (fits almost all masks except those that have a forehead ONLY headgear strap).
- The long chinstrap includes an additional velcro strap that may be used to lengthen the standard strap. Just cut the orignial strap in half, then use the additional velcro strap to customize to your preferred length.
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