Easy to Use - The folding stool is easy to expand and collapse. You can open it just by holding both ends and pulling to open with slight turning them. It has a an interlocking system when you just twist it, it doesn't retract. The extendable stool is fully adjustable and lockable. It goes anywhere from 2" to 18" in height. This adjustability makes it suitable for most adults and children.Upgraded Fish Scale Design for 2021 - Unique locking clasp system allows the adjustable stool to open and close easily in just seconds, and it locks firmly in place once opened. Made of high-strength environmental friendly material plastic PA66, cylindrical structure, tight connecting clasps, and the anti-slip base ensure the stability of the folding stool, provide safe and comfortable sitting. The recommend load capacity is as much as 400 lbs (180kg) Lightweight but Portable - The retractable folding stool is only weights 3lbs, you can take it anywhere without any burden, you can even hang it on your backpack. Small and convenient to place into luggage or storage. Can be used in buses, subways, train stations when you go out.Multipurpose - This folding stool is perfect for indoors and outdoors. Indoor occasions such as the living room, bedroom, kitchen or office. Outdoor activities like camping, fishing, hunting, hiking, BBQ, picnic, queuing or gardening etc.Warm Tips - Please sit in the center of the seat. This stool can also be slightly tilted. Do NOT sit on the edge of the chair in case you fall down. Don't sit on it all day in case your butt hurts. Any questions, please feel free to email us, we will give you a satisfied reply.