The Squatty Potty works perfectly with any standard toilet; a 7-in Squatty Potty works with both standard (14-in- 15.5-in) and comfort height (16-in - 18-in) toilets; if you are limber or an advanced squatter, a 9-in Squatty Potty will work best. Doctor-recommended Squatty Potty toilet stool is easy to use, and highly effective in aligning the colon for effortless elimination; it simulates a comfortable squat position, and helps ease toilet-related ailments. Experience the benefits of healthy toilet posture; you will enjoy a faster, easier, smarter and more complete elimination with the use of The Original Squatty Potty toilet stool. The Ecco toilet stool works perfectly for families of any size. Get optimal elimination without breaking the bank. Incredibly durable and easy to clean.