MTI F Spec MTI F Spec from Jeff Muller MTI F Spec Fishing system for several specific jackets that work well for larger kayaks set up to fish. gLike MTI F Spec Fishing system for several specific jackets that work well for larger kayaks set up to fish. Industrial Design Research Product Design Share R 7 n Jeff Muller UI/UX Designer at Integrated Computer Solutions, Inc. Boston, MA Follow Contact