Glass Drinking Bottle Set: 10 square 16oz glass bottles, 10 black plastic threaded sealing caps, 5 silver aluminum caps with holes, 5 glass curved straws, 2 straw brushes, 1 sponge bottle washing brush. | Product Makings: Our water bottles are made of Premium glass, beautiful and solid, reusable glass. The plastic lid has a gasket inside with high closure to prevent liquid leakage. | Product Cleaning: Glass juice bottles are dishwasher safe and can be cleaned at the bottom of the bottle using a sponge brush if washed by hand. Use a small brush to clean the glass straw, easy to operate. | Portable Drinking Bottle: Wide mouth glass bottle can be used to store all kinds of drinks, juice, squeeze, milk, coffee, milkshake, kombucha, etc. After sealed with the plastic lid, the small water bottle can be conveniently put in your backpack or car, very convenient. | Pay Attention: Our glass juice bottles with lids are resistant to both high and low temperatures, these bottles can be placed in the refrigerator but not the freezer.