✨ Unleash Creativity with Every Stack! 🌟 Ideal for birthdays and holidays, sparking joy and creativity. Hand-sanded acrylic ensures smooth edges for safe play. Encourages numeracy and color recognition through play. Creates stunning light effects for an immersive experience. Customer support ready to ensure your happiness. 16 vibrant colors Light-responsive design 2.5 cm cube size The Rainbow Crystal Acrylic Cubes set includes 16 hand-sanded, vibrant blocks designed to enhance children's learning through color recognition and numeracy. Perfect for sensory play, these blocks create stunning light effects and are an ideal gift for any occasion.