reusable straws telescopic metal travel straws - anpro stainless steel drinking straws, portable collapsible straw with case & key chain & cleaning brush, 2 pack anpro straw material: food-grade stainless steel straw length (min - max) : 2.6 - 9.0 inch straw weight: 0.5 oz package size: 0.3 x 0.09 x 0.09 inch package weight: 2.5 oz warming tips: 1. straws boil disinfection is the necessary step before the first use. 2. vinegar can clean the incrustation perfectly.