UNIVERSAL SHOULDER RESERVE Ambidextrous shoulder strap with hook for GPS Riserva door to be combined with one of the Reserve GPS holders of your choice (R2180 / 2182/2183), fully adjustable in width and height. This shoulder strap with GPS port is ideal for hunting with your dog both in the mountains and in the woods. To be combined with the following GPS RESERVE port: R2180 for SPORTDOG TEK 2 R2182 for BS PLANET BS 300 R2183 for GARMIN ATEMOS