The product description Features:stool is made of high-strength of nylon ABS material. This heavy duty material is long lasting, fine workmanship, rugged, and durable. Double belt design, compact and portable.it is suitable for camping, repair, fishing, line up, paint, garden, office, travel, outdoor and more. Easy installation, height can be adjusted freely.Notes: do not sit on the edge of the seat. DO NOT tilt the stool. All buckles should be locked firmly when you strench the stool. If do not that maybe make you fall the floor. The bottom is non-slip, and each layer has multiple buckles for safety. Detailed operation steps: Insert the fingers of both hands into the upper cover of the product and the finger clasp on the base, and then pull outward. To close it, use appropriate force to turn it counterclockwise and inward.Step 1: Hold the designated positions on both sides Step 2: Pull both sides apart, twist slightly when pulling Step 3: pull and twist to the required height Step 4: Close the stool. Hold the stool in the same way and tighten it with a twist