I've used Aviator brand for a very long time, almost since company started. Aviator is advertised as a fligh harness. I haven't used it that way. It's sturdily made and as close to one piece as possible. With supervision it's very beak resistant. My current one several years old. The previous one was left near cage and demoted to back up. Before considering a harness, your bird needs to be used to having nearly entire body handled; wings, legs, head. Aviator has a video that helps. The leash is stretchy. I am paranoid about fly away. Prevention is my motto. So I advocate harness. Yes, it's expensive but current one is nearing 7 yrs of use. They have a variety of colors and sizes. I have a retractable leash attached. It has an old puppy collar on it. I hook collar to my wrist or travel carrier as extra security. My CAG will demand to go 'bye' I am expected to put harness on and take her outside. She goes to pet stores, vet, trips etc. She wears it in her travel carrier. We used to go on walks. But she mimics red-tailed hawks so well we were getting dive bombed. Check out Aviator sire and videos
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