# Constants (/themes/sdk/reference/cart/constants)

```ts
import { … } from '@poltura/theme-sdk/cart';
```

## `cartRegions` [#cartregions]

The cart template's regions, where merchants place blocks.

```ts
const cartRegions: {
    readonly head: 'head';
    readonly items: 'items';
    readonly foot: 'foot';
    readonly aside: 'aside';
    readonly empty: 'empty';
}
```

**Example**

```tsx
import { Slot } from '@poltura/theme-sdk/elements';
import { cartRegions } from '@poltura/theme-sdk/cart';

export function CartAside() {
  return <Slot name={cartRegions.aside} />;
}
```