The 6th Sense Fishing Boosa 9.6-inch Ribbon Tail incorporates alternating ribs, allowing the worm to shift water, generate flexible movement, all while also locking in any added scent significantly better than a smooth sided worm. To finalize the design and through vigorous testing, a bulbous, ringed 'Boosa' tail creates a secondary vibrating motion on the fall, and at rest. 8pk