Durable EnGuard™V, modified PVC coated fabric reinforced with radio frequency-welded, high visibility yellow runway strips that withstand drive-thru traffic, including backhoes and skid steers. Removable 4-in (102-mm) diameter foam inserts support sidewalls while 2-in H x 8-in W (51 x 203-mm) planks (not included) slide into pockets to keep end walls elevated preventing wastewater from escaping during drive-over. Simply remove foam inserts to fold material for quick and compact storage. Two 1-in