Key Features :
i : 36 PIECES, 6 TEXTURES AND 3 SIZES -- This set features 36 shells with 6 different tactile surfaces in 3 sizes. Young hands love to hold the fascinating textures!ii : ECO-FRIENDLY -- Made from agricultural waste products (rice stems and husks), the shells are 100% recyclable, require fewer resources to manufacture and break down in the environment.iii : EARLY MATH FOR TODDLERS -- Toddlers can use these open-ended manipulatives to develop early math skills as well as language.iv : SHELLING OUT ECOLOGICAL BENEFITS -- These captivating shells are biodegradable. Their manufacture produces zero pollution with large savings in energy and water.v : EASY STORAGE -- Each set comes with a cotton bag, making these manipulatives easy to store and take anywhere!vi : SAFE FOR TODDLERS -- These captivating manipulatives are safety tested for children aged 18m+ and are made from 100% natural, non-toxic materials.