GYBBER&MUMU Little Star Children Mental Development Tangram Wooden Jigsaw Puzzle Educational Toys for Kids Includes 7 pieces wood blocks with bright color. Made of durable wood with non-toxic child safe materials. The world's oldest and most well known silhouette puzzle,fun for all ages. A challenging game that enhances visual perception ability, develop problem solving skills, creative thinking capacity and teamwork. Encourages and develop kids imagination, creation, fine motor skills,hand-eye coordination, color and shape cognitive abilities and practical abilities. 100% SATISFACTION GUARANTEED - Customer satisfaction is our highest priority, if for any reason you are not completely satisfied with our product we will immediately provide you a full refund (or replace your item).