Our paper tea filters are made from abaca pulp, cellulose and sealing fibers, guaranteeing true-flavor filtering. They are chlorine-free bleached and biodegradable. Without glue or any other type of binding agent. The expanding base of the paper tea filter provides the tea leaves enough room for their flavor to fully unfold. The box has a large opening for taking out the filters. Reclosable and FSC®-certified. MEASUREMENTS: Filter : 3.9 x 5.1 in / 10.0 x 13.0 cm (W/H including flap) Box: 1.2 x 4.3 x 5.9 in / 3.0 x 11.0 x 15.0 cm (W/H/L) Tray: 4.5 x 6.0 x 14.9 in / 11.4 x 15.3 x 37.8 cm (W/H/L)