Tumi-Isi Wooden Stacking Rocks Toys this special pop-up book will

this special pop-up book will appeal to all ages

Stria is engineered to be intuitive

From its beginnings in Oklahoma City in 1927

Working with fellow Pentagram designers Jeff Close and Kristin Huber

Tumi-Isi Wooden Stacking Rocks Toys this special pop-up book willThese tactile objects are meant to nourish your sense of balance and creativity, while also transporting you back to that river where you stacked stones as high as you could. Designed by Nara based studio A4, tumi isi (; 'stacking stones' in Japanese) are a set of 5 blocks individually hand bevelled into asymmetrical shapes by local artisans. Made from the finest woods of Yoshino Cedar and Yoshino Cypress, the blocks are coated with natural pigments