FUN FOAM ACTIVITY PLAY SET: Our Climb and Crawl Activity Play Set is designed to let infants and toddlers climb, crawl, and slide on a collection of five foam shapes. QUALITY MATERIALS: This children's building blocks are designed with a dense foam core upholstered in non-toxic polyurethane soft leather that is easy to wipe clean with a soap and water solution. The dense foam structure of each lightweight piece keeps kids safe and cozy as they play. HELPS DEVELOP GROSS MOTOR SKILLS: Our toddler climbing blocks allow little ones to develop important gross motor skills such as lifting, stacking, and carrying as they move and play at home, at daycare, or in the classroom. SAFETY: This Climb and Crawl Activity Play Set is made from durable materials that are phthalate-free and with minimal emissions into indoor air. ADULT SUPERVISION REQUIRED: Children should remove shoes before use. It is recommended for kids 9 months to 3 years old; adult supervision is required.