Wallpaper 4Walls three Pillars Designs Who Let the Kids Out Border Beach Border WK9122B. Keywords are beach chair, palm trees, beach scenes. Colors are Blue, Green, Light Blue, Lime, Medium Gray, White, Yellow Green. Alternate color patterns are . Coordinating patterns are WK9531M;Page:36. Product Details: prepasted washable Material: Paper Backed Vinyl. Product Information: Book name: Who Let the Kids Out Pattern name: Beach Border Pattern #: WK9122B Repeat Length: 20 1/2 inches. Border Height: 9 inches. Pattern Length: 15 inches.