5 X 5 Sandbox with Cover Corner Seats and Ground BarrierFeatures:INTERLOCKING: Patented interlocking design makes it easy to assemble and disassemble in minutes.DURABLE: Made of commercial grade plastic (HDPE) with UV stabilizers.GROUND BARRIER: Includes heavy-duty erosion fabric barrier designed to keep plants and insects out while still being permeable to let water out.COVERLOCK: All SandLock Covers include the CoverLock shock cord system. Shock cords are sewn into corners and sides of cover and used by pulling on to notches in sandbox. This design allows covers to go on and off easily while staying on in extreme year round outdoor weather.Kit includes:(4) 10 x 59 interlocking pane