The Alaska Guide Creations Pro Tether are custom 3/8" x 8" long elastic cords that can be used to secure and protect your binoculars (or other device) in the event of an accidental drop. They easily connect inline between your optics and secure points on your AGC Bino Pack. The Ravus and Gen L harnesses contain grommets where the tethers can be connected and the 3 bar sliders on traditional AGC harnesses can be used to connect the tethers. To attach and detach the optics from the tether, simply rotate the 3D printed custom tether clip 90 degrees and slide the tether loop through the slot of the clip. The black micro cord loop on the tether clip can be connected through the attachment location on the optics by slipping the micro cord through it and then back over the tether clip. Reattach the tether clips to the 3/8" tether loops in the same fashion you removed it. Protect your optics from accidental drops!