The back of the holder part has streaks so writing instruments such as ballpoint pens are firmly secured. (Compatible diameter: up to 0.6 inches (15 mm)); Pen holder body can be easily attached with one touch; Includes stickers that can be written on your name and blood type; Color: Green; Width: 1.4 inches (35 mm); Length: 3.1 inches (80 mm); Compatible helmet: Grooved type; Polypropylene (PP).
●ホルダー部分の裏側には筋が入っているので、ボールペン等の筆記用具がしっかり固定されます。（対応筆記用具直径:15mmまで）