Silva Spectra Double Battery Connector Salted Raspberry Knockaround Fort Knocks sunglasses are

Knockaround Fort Knocks sunglasses are designed to be durable

Polarized yellow mirrored lenses

Tough bottle with a tight sealing lid so it’s safe in your luggage or pack

Polarized green moonshine lenses

Silva Spectra Double Battery Connector Salted Raspberry Knockaround Fort Knocks sunglasses areSpectra Double Battery Connector is a parallel adapter that turns two Spectra batteries into one, giving you twice the burn time. You can get more action hours without having to stop to switch or charge batteries. Simply connect the adapter to the Spectra headlamp and two Spectra batteries. Spectra Double Battery Connector is compatible with Spectra headlamps and Spectra Battery 96 Wh.