Unlock endless play potential with All-In by Stapelstein®. Harmoniously bringing together our full Rainbow Set set and bundling it with the core layers of Inside, plus our multi-use Board, this modular play system provides more fun and learning opportunities than ever before. So whether you and your child decide to stack them, challenge your balance, enjoy a round of toss or organize by color, there’s no wrong way to interact with our versatile and colorful elements.