SmartOptions lets you go beyond the built-in variant limit by adding unlimited custom fields to any product. Choose from 10 option types including text inputs, dropdowns, color swatches, date pickers, and more. Add-on amounts are automatically included as line items at checkout. Smart targeting applies option sets to specific products, collections, or all products. One-click theme installation works with all Online Store 2.0 themes. Cascading option choices are available and work with inventory.