A flexible liner (10) for a hopper or chute (40) has a plurality of overlapping flexible liner panels or tiles (20) secured to the walls (41,42) of the hopper or chute (40) by fixing strips (30). Each flexible liner panel or tile (20) has an elongate body (21) and a flexible fin or flap (22) formed integrally of elastomeric material, where the flexible fin or flap (22) extends at an acute included angle (α) (in the direction of flow of material through the hopper or chute (140)) to the side walls (41,42) and the Shore A hardness of the elongate body 21) is equal to, or greater than, the Shore A hardness of the flexible fin or flap (22).