【4 Built In Semicircular Seats】This 6 ft kids sandbox is designed with 4 semicircular seats, allowing kids to sit comfortably while preventing them from directly sitting into the sand. Besides, there exist reinforced seat holders to provide strong support and ensure a large weight capacity of 165 lbs (each chair). 【Bottom Liner & Protective Cover】The bottomless sandbox features a bottom liner with holes that promotes air circulation, facilitates water and sand drainage. Moreover, this sand pit also has a waterproof and sun-protection oxford cover for preventing wind from blowing the sand away.The large sandbox measures 72" x 41.5"x 8" which needs 26 bags of sand to fill(Per sandbag loads 50 lbs). Note: the play-grade sand and toys are not included. 【Weather-Resistant & Durable Material】Combined with 8 panels that are made of high-quality HDPE material, the sand box kit ensures great weather resistance, and long-lasting durability while keeping odor-free and non-toxic, allowing kids to play safely. In addition, the polished smooth surface prevents from scratching children's skin. 【Kids Backyard Activity Center】This large outdoor sandbox can be a backyard entertainment space or a temporary beach activity center for 4 kids to play with. Through this funny sand game, children can enhance social skills, keep a positive mood, and develop mental abilities. Moreover, parents can play with kids to improve interaction. 【Tool-Free Assembly & Stable Structure】The outdoor sandbox is composed of 8 panels and all you need to do is to tightly connect each panel by hinges, which is ultra-easy and no-tools needed. Other than that, we provide 8 metal stakes for securing into the sand or soil, preventing it from blowing away. Note: the play-grade sand and toys are not included.