Mini ( XXXS ) Aviator Harness for birds weighing under 75 grams: Sm. Parakeets, Love Birds, Parrotlets, Plumb Head. We GUARANTEE FIT and will replace for free if you accidentally choose the wrong size. Only 6.5 gm. (~1/4 oz.) is the weight of the ENTIRE Mini Aviator - Only bird harness designed for safe flight - Easiest to install - 1 piece design - No buckles or clips -- Only one adjustment slide. Quality material is Ultrasonically cut, welded and heat contoured creating a most comfortable fit. Escape-Proof! Many other brands have leads and leashes with buckles and clips that can be easily removed by your bird. The strong steel slide has been powder-coated black to make them unattractive as toys. No Stitching for your bird to play with.