CO-BLOCK is a combination of “CO” meaning “together” and ‘BLOCK’, and is the ultimate learning toy that encourages creativity, imagination, and social development by playing together instead of alone. It is a baby block that considers the developmental characteristics of 0-year-olds and can be used by children as young as infants and up to 7 years old. [CO-BLOCK 's 3S] • SAFE CO-BLOCK is a clean block that has been tested free of all harmful substances and is safe to use from infancy. • SOFT CO-BLOCK is a jelly block made of a special plastic material that is soft and flexible enough to be safe to bite, suck, throw, step on, and lay on. • SIDE HOLDING CO-BLOCK has moved away from the traditional hard dot-holding method in favor of a new soft, yet firm, face-holding method that makes inserting and removing blocks easy.