Lux Fetish Beginners Strap On Harness Black. One size fits most. Harness has an adjustable waist that can fit up to 60 inches waist. High quality strap on harness is perfect for beginners and those who love stimulation. Equipped with sturdy rubber o-rings in 2 sizes that are compatible with flared based dildos. Adjustable straps. Fully adjustable 4 way straps for a perfect custom fit.