niceEshop(TM) Children's Height Adjustable Portable Basketball System Height adjustable from 2 to 6 feet Portable - Easy to install and remove. Let you enjoy sports anytime and anywhere It can be used indoor and outdoor, and do not need to worry about weather and site anymore Interactive games will help you deepen emotion and understanding with your kid. Non-metal base can be filled with water or sand to keep stable (best to have a mixture of both sand and water - not included)