Ronix One Custom Fit I BOA I Impact Vest I 2021 The new Ronix One Custom Fit Impact Vest forms to your chest like no other water garment. Designed by a Manhattan tailor, dropped into a computer and scaled to fit just the right way. Fine-tune this One even more with our Boa system. It is light, comfy and super soft - designed from quality materials that have quick drying properties. Features  Not a Buoyancy Aid Boa System Tailored Fit Four Way Stretch Ronix One Custom Fit Impact Vest 2021 in Charcoal