Comes with Velcro to secure the blocks on floor if needed. 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. Soft play structure: Little ones love climbing, crawling and sliding on this beginner climber complete with Steps, a Tunnel and slide. Commercial or home use: create a fun play area for children ages 9 months to 3 years in bedrooms, playrooms, preschools and daycares. Play and grow: as they move and tumble across the play area, little ones develop coordination important general motor skills. Safe active play: soft-but-sturdy foam shapes are covered with a non-toxic leather-like material that's durable and soft to the touch. Adult supervision required: Children should remove shoes before use. It is recommended for kids 9 months to 3 years old; adult supervision is required.