Designed for those who have difficulty sitting down or standing up from the toilet . Adds 4" to toilet seat height, reducing bending effort . Front clamping mechanism locks securely to the toilet and prevents shifting of the seat . Wide, contoured seating surface is comfortable . White, heavy duty plastic construction is strong and durable . Push buttons allow for easy removal of armrests . Maximum Weight Capacity 300 lb - EVENLY DISTRIBUTED . Designed to meet the requirements of HCPCS code: E0244 . Lifetime limited warranty .