The shape of sticks to come. Period Sticks fit comfortably between teeth, stimulate gums, and remove plaque and food particles like no other dental stick. Feels so good. Professionally designed for efficacy and comfort with a slim, yet curving, triangle profile. Double-sided. Eco-certified Nordic birch. Tapered, anatomical profile. Naturally biodegradable. No added dyes or flavor. Thin, for normal to tight spaces.