Made of soft, purified, medical-grade cotton, the braided cotton roll is held together with silky yarn instead of chemicals or starch, resulting in ultimate comfort for the patient as well as durability. Its unique wicking action produces a drier field. The innovative flexible design securely fits into the buccal curvature and the sublingual space. Ideal for bleaching or full arch reconstruction. Made in U.S.A. 3/8" diameter, 4" length.