Costway 3-in-1 Kids Picnic Table Wooden Outdoor Sand & Water Table w/Umbrella If your kids are curious about the world and want to ex perience new things then our 3-in-1 picnic table can create a funny place for them and accompany them during their growing up.5 (L x W x H) Dimension of Umbrella: 46 -73. Costway 3-in-1 Kids Picnic Table Wooden Outdoor Sand & Water Table w/Umbrella.5 x 57 (H x D) Dimension of Box: 15 x 12.