# wrappedValue The underlying value referenced by the binding variable. ``` var wrappedValue: Value { get nonmutating set } ``` ## Discussion This property provides primary access to the value’s data. However, you don’t access `wrappedValue` directly. Instead, you use the property variable created with the [`Binding`](/documentation/SwiftUI/Binding) attribute. In the following code example, the binding variable `isPlaying` returns the value of `wrappedValue`: ``` struct PlayButton: View { @Binding var isPlaying: Bool var body: some View { Button(isPlaying ? "Pause" : "Play") { isPlaying.toggle() } } } ``` When a mutable binding value changes, the new value is immediately available. However, updates to a view displaying the value happens asynchronously, so the view may not show the change immediately. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)