50% Bamboo Fiber mixed with 50% Polyester (Tetoron) for the lanyard. With a nickel free quality snap hook (Att-5) and a plastic detachable buckle(Att-10-A) of recyclable material. Logo made by silk-screen printing. Stock colors available in black, white, PMS 281 C navy blue, PMS 485 C red, PMS 348 C green, PMS 021 C orange, and PMS yellow C of 1 cm, 1.5 cm, 2.0 cm and 2.5 cm widths. Biodegradable ECO Friedndly Material!