Glass mate gourd wrapped in Aguayo cloth or, arpillera or faux capybara leather or faux leather. Waxed thread & metal rim, sewed by hand. Assorted colors & models in one case This cup is to drink yerba mate traditionally, the bombilla straw to sip the yerba mate brew it's made of stainless steel and it's included. This mate it's made of glass does not require curing, it's ready to use.