The Pro Sportfisher Flexitube is a revolution within modern tube design! An industry 1st and Pro original. Our Flexitube is an injection molded tube design where the tube is made in two dimensions but in one piece! Comes in 13 cool colors in what we refer to as 40/40. It basically means you have the advantage of a 40mm long tube to tie on and a 40mm long tube for the hook guide. This gives the tier full control when designing their fly!