3-ply hot air seam sealing tape: 1.strong adhesive force & water resistance 2.high air permeability, ... healthy,very eco-friendl Threeply seam tape,3-ply seam tape,3 ply seam tape;1.Structure makeup:Nylon+TPU+PU Hot ... up to GB4-5 grade.Application: all kind of waterproof coat,shoes,tents,raincoat exposure suit, wader,down jacket,navigation cloth ...