Concrete Jungle Quilt Pattern by Eliane Bergmann of Patchwork and Poodles. Concrete Jungle is a modern, geometric quilt with a bold finish! This Mockprov (mock improv) quilt comes together quickly for a fun, easy-to-finish quilt pattern. Concrete Jungle has the look of improv but all the math is done for you with easy to construct blocks and a "paint-by-number" style assembly. This quilt pattern comes with instructions for five sizes -- baby (30 in. x 40 in. ), lap (45 in. x 60 in.), throw (54 in. x 69 in.), twin (70 in. x 93 in.), and bed (93 in. x 93 in.). Beginner friendly, with LOTS of easy-to-follow diagrams.