STAEDTLER 334 SB20 Triplus Fineliner Superfine Pen, 0.3mm Line Width Assorted Colours (Desktop Box of 20)

Waterproof head-strap camera mount that works with any GoPro camera One size fits all, fits directly on head or over most helmets Ideal for hands-free filming when you want a point-of-view angle Adjustable polyester straps with non-slip rubber inserts; polycarbonate buckles Measures 15.2-17.8 cm in diameter, stretches to 30.5 cm in diameter