The present invention related to improvements in weft-carrying grippers for weft continuous feed weaving looms and in means for guiding their movement through the shed. The weft carrying grippers (1, 2) according to the invention, of the type wherein the grippers are made of metal and are driven in their back-and-forth movements through the shed by carbon-fibre and/or polyester straps exclusively guided from outside the shed are both characterised by a metal shoe (3, 4) integrated in said gripper and projecting from the bottom thereof, near the tip, to which it is radiussed and in that said shoe (3, 4) has a large central recess (7, 8), designed to host the ends (12, 13) of the driving strap (10, 11), which is narrower than the rest of the strap and thinner than the recess (7, 8) of the shoe. The respective means for guiding the movements through a loom shed of a pair of weft-carrying grippers (1, 2) as defined above, of the type wherein in the driving straps (10. 11) of said grippers there is a metal track covered in ceramic, is characterised in that said straps (10, 11) are quite larger than said grippers (1, 2), except near said grippers, and are guided by two double rows of hooks (19, 20) or by a pair of grooved guides placed outside the shed, and in that at least the parts (16, 17) placed outside the shed of said track have a large central longitudinal groove (21, 22) designed to host the shoe (3, 4) of said grippers (1, 2).