Abstract: A tie strip is formed of a flexible resilient material in strip form, with regularly longitudinally spaced openings formed in the strip and a pair of oppositely directed pawl acting tongues projecting from opposite end edges of each opening toward each other. The strip, in application, is folded at its end about its medial axis and inserted in a selected opening and it is movable through the opening in only one direction when inclined to the strip at the engaging opening in such direction and is movable in the opposite direction upon reversal of the inclination, the opposite tongues functioning as opposing pawls.