The yerba mate STRAW is made of food grade 304 stainless steel. Reusable, eco-friendly and long lasting quality. 7.75 inches/19.5 cm long ERGONOMIC DESIGN, bombilla straw built in strainer to filter out any loose leaf yerba mate or tea, slightly curved at the top for comfortable drinking, round spoon style filter, never gets clogged and helps out to scoop out the yerba mate from the gourd.