This betta training ring and filter ball set is designed to improve your fish's physical fitness and mental well-being. The training ring, which attaches to the tank with a suction cup, encourages your betta to swim and explore. The filter balls help maintain optimal quality, providing a healthy habitat for your fish. Features -Color:White -Material:Abs -Size:7.20X7.20X0.40cm/2.83X2.83X0.16in -Size:4.00X4.00X4.00cm/1.57X1.57X1.57in -Firm suction cup: the betta training ring includes a strong suction cup that ensures it stays securely attached to the aquarium. -Encourages exercise: the training ring promotes physical activity in your betta fish, helping to keep them healthy and active. -Ample : the training ring provides a large, hidden area for your betta fish to relax and play. -Safe and durable: made from materials, the training ring is safe for your betta fish and built to last. -Easy to install: the training ring is designed for easy installation and use, making it suitable for all betta fish owners Package list: 4 x Betta Fish Exercise Ring with Suction cup 6 x Filter Balls