POTRISERS, made from 100-percent recycled material, were designed to be an eco-friendly, indestructible and low profile alternative to decorative pot feet, trays and trivets. While remaining hidden, POTRISERS can be fitted to heavy, pre-planted containers. Rubberized material grips surfaces while providing cushioning on hard or uneven surfaces such as wood, concrete, aggregate, compacted materials or stone. POTRISERS come in both retail and bulk packaging. Designed to protect and hide drip lines, POTRISERS allow for easy cleaning and provide crucial drainage needed for healthy plants. By floating containers off the ground, pots are less likely to freeze and crack in cold temperatures. Stack them to level planters on slopes. Suggested Use: Equally space 4 risers beneath outside edges of pot. If using with a tray – place a set below the tray to prevent water rings or condensation on surfaces, and within the tray beneath the pot to allow the pot to drain freely. POTRISERS have been field tested by the Engineering Laboratory of the University of Washington for strength and field tested for durability. This standard riser, recommended for small to medium pots and statuary, will support up to 1600-pound (per set of 4).