How Has The Rabb 1st Potty Training Seat Evolved Through Iterations?. In addition, our seat is suitable for all toilet shapesexcept for square-shaped ones. Upgraded Version: We've improved our toilet step stool by creating a sturdy triangular structure that's designed to support children as they climb; Plus, we've widened the stepping surface to 15.7"x5.2", providing more space for children to turn around and eliminating any fear they may have of climbing.
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