the seat measures 1-1/2 inches in thickness and has an inner plywood core that is 1/2 of an inch thick

and two heavy-gauge steel shelves inside

Wet Strength Level: Superior

Identify your spill kit locations so they can be found easily in the event of an emergency

Enpac Portable Drip Pillow, Reinforced Vinyl, 4 gal Spill Capacity, 42 in Length, 38 in Width - 5680-YE Nominal Size-54" X 36" X 1.25" the seat measures 1-1/2 inchesSorbent pillow berm is constructed of UV resistant reinforced vinyl pads. Grounding straps and grommets are included for staking, tie down, or tethering. Sturdy weighted base withstands 40 mph winds. Replacement pad inserts available separately on Grainger. com.