This foam climbing block set features durable design with soft comfortable touch – durable soft-touch foam with skin-friendly PU leather surface; ideal buffer amusement space for climbing, tumbling, and laughter; balances practical function and beautiful design; adds charm to children's toys. High-density foam core – strong support and lasting comfort; high-quality high-resilience foam; remains solid, elastic, and strong even after long-term use; dense foam provides stable support for every step and climb; maintains shape. Skin-friendly fabric with invisible zipper – soft breathable fabric; gentle on delicate skin; invisible zipper prevents finger pinching; detachable machine-washable cover; keeps play space clean and hygienic. Climbing and crawling stimulating motivation – four-piece modular structure; children freely combine in various ways; stimulates innovative consciousness; improves motor skills; suitable for classrooms, nurseries, families, and game rooms. Promotes children's all-round development – stimulates muscle development; enhances hand-eye coordination; improves balance; suitable for ages 1-3; cognitive development and creativity stimulation; diverse shapes and rich colours.