Puzzle - based logic games for brain training​ Concave finds Convex Puzzle by Grimms New Range 2019

Tricky building game in which the matching two parts are to be found. As a tactile variation, put the pieces in a bag and find the matching parts through the sense of touch.The individual parts have interesting and unusual shapes so they are also ideal for outdoor play and imaginative building. 4 parts, lime wood, non-toxic water based color stain