| 摘要 |
A bracelet responsive to being hydrated may include a top surface and a bottom surface, an inner surface defining a central aperture extending between the top surface and the bottom surface, an outer surface being in a spaced relationship with the inner surface and extending between the top surface on the bottom surface, and a hydrochromic layer formed on an exposed surface of the bracelet, the layer having a first appearance that changes to a second appearance responsive to the hydration of the bracelet. The exposed surface may be on the top surface, and the exposed surface may be on the bottom surface. The exposed surface may be on the outer surface, and the change of the first appearance to the second appearance may be permanent. The change from the first appearance to the second appearance may be nonpermanent. |
