The Rock Lock Sandbox Piece - Straight Section allows you to build the perfect Rock Lock Sandbox for your space, no matter what the size. This section is made from polyethylene which will not crack, chip, or fade in any weather and includes a 10 year guaranteed UV stabilized HDPE. Designed to look like real stone, you"ll love how the Rock Lock sandboxes blend effortlessly into your yard. * Expand or custom-build a Rock Lock Sandbox * Constructed from polyethylene for durability * Will not crack, chip, or fade in any weather * Looks like real stone * Includes a 10 year guaranteed UV stabilized HDPE * Easy to assemble