High-quality materials: Compared with other flow rings, our 3D sculpture rings are made of high-quality 304 stainless steel. Long-lasting color: high-quality electroplating technology can protect the flow ring from fading for a long time. Multifunctional interactive toy: Transfer to a friend’s arm and play with a friend. To some extent, it can reduce your anxiety, stress and anger. Please note: there are no sharp edges. If you don’t play it in a weird way, it will be harmless. However, children under the age of 8 need adult supervision. Size: When folded, the product size: 5.6X6.3X0.6 inches. Flat 5.2 inches in diameter. Packing details: 1* flow ring.