Durable Glass Hydration Bottle is perfect for indoor or outdoor use. Great for packing along for hiking, camping, traveling, or just for around the house. The glass bottle paired with a BPA free screw-on cap is the perfect answer for hygiene demands. The 12 oz. capacity is a practical size for a water bottle and fits common water bottle holders. The slim shape feels well fitted for holding in your hand. These bottles have a Screw On Cap which ensures the cap won't pop off if the bottle is tipped over. ***Disclaimer: This listing was changed from an 18 oz bottle to a 12 oz bottle so the reviews may not be relevant to these 12 oz bottles.***