This elevated toilet seat by Drive Medical fits most standard and elongated toilets. The lock ensures a tight fit providing additional safety and added feeling of security. A wide opening in the front and back allow for worry-free personal hygiene. The elevated seat will help individuals who need a boost sitting down or standing up from the toilet. For consumers using a wheelchair this product allows for easy transfer to and from the raised toilet seat. The product is protected by a manufacturers limited lifetime warranty. Due to hygienic reasons, this item is not returnable once the inner packaging is opened.