Dakine Rasta Thruster Knit Surf Bag Dakine 7ft 6in Knit Surf Bag-Thruster. Day use board sock. Thick, high quality acrylic knit fabric for ding protection, UV shielding and resistance to fin cuts. Versatile shape fits most boards. 600D polyester nose reinforcement. Drawstring closure. Imported. Vendor style #: 6000350.