```js
  <SquareRadioButton
    inStock
    input={{value: 4}}>4</SquareRadioButton>
```

```js
  <SquareRadioButton 
    input={{value: 4}}>4</SquareRadioButton>
```

```js
  <SquareRadioButton
    inStock
    selected
    input={{value: 4}}>4</SquareRadioButton>
```