---
title: CartLine - Storefront API
description: Represents information about the merchandise in the cart.
api_version: 2026-01
api_name: storefront
type: object
api_type: graphql
source_url:
  html: 'https://shopify.dev/docs/api/storefront/latest/objects/CartLine'
  md: 'https://shopify.dev/docs/api/storefront/latest/objects/CartLine.md'
---

# Cart​Line

object

Represents information about the merchandise in the cart.

## Fields

* attribute
* attributes
* cost
* discountAllocations
* id
* instructions
* merchandise
* parentRelationship
* quantity
* sellingPlanAllocation
* estimatedCost: deprecated

***

## Map

### Fields with this object

* [CartLineParentRelationship.parent](https://shopify.dev/docs/api/storefront/latest/objects/CartLineParentRelationship#field-CartLineParentRelationship.fields.parent)
* [ComponentizableCartLine.lineComponents](https://shopify.dev/docs/api/storefront/latest/objects/ComponentizableCartLine#field-ComponentizableCartLine.fields.lineComponents)

***

## Interfaces

* BaseCartLine
* Node

***

## CartLine Implements

### Implements

* [Base​Cart​Line](https://shopify.dev/docs/api/storefront/latest/interfaces/BaseCartLine)
* [Node](https://shopify.dev/docs/api/storefront/latest/interfaces/Node)