The Bariatric Bottle helps you stay hydrated while recovering from weight-loss surgery and during the first few weeks of a new way of drinking. Staying hydrated is one of the most important factors in a full recovery. You are recommended to aim for 64 oz of fluids per day. However, many of you may only be able to tolerate 1/2 oz to 1 oz at a time. Without the Bariatric Bottle you might normally fill small medicine cups hundreds, if not thousands of times! Additional challenges come while trying to stay hydrated on your frequent walks. Time to make your recovery easier! Stay properly hydrated and promote your healing with the Bariatric Bottle. Each bottle has fluid markings in both oz and mL.