Enviro Glass Straw 10" Straight, 2-PackAll glass straw combo packs come with 2 straws and a stainless steel cleaning brush. The regular sized 9. 5mm diameter is designed for thinner liquids such as coffee, milk, and juice. 10" is ideal for large (24oz) cups, beer or cider bottles, large to go cups and generally your taller glassware. These straws are handmade on Vancouver Island using Simax glass, the highest quality borosilicate glass on the market.