diff --git a/src/app/core/layout/store-layout/store-layout.component.spec.ts b/src/app/core/layout/store-layout/store-layout.component.spec.ts
index a4ecba1..33c28c9 100644
--- a/src/app/core/layout/store-layout/store-layout.component.spec.ts
+++ b/src/app/core/layout/store-layout/store-layout.component.spec.ts
@@ -574,6 +574,7 @@ describe('StoreLayoutComponent', () => {
           product: {
             nombre: 'Producto',
             imagen: null,
+            variant: null,
           },
         },
       ],
@@ -627,6 +628,7 @@ describe('StoreLayoutComponent', () => {
           product: {
             nombre: 'Producto',
             imagen: null,
+            variant: null,
           },
         },
       ],
diff --git a/src/app/core/layout/store-layout/store-layout.component.ts b/src/app/core/layout/store-layout/store-layout.component.ts
index 0ab3b6c..66b73d4 100644
--- a/src/app/core/layout/store-layout/store-layout.component.ts
+++ b/src/app/core/layout/store-layout/store-layout.component.ts
@@ -70,10 +70,7 @@ export class StoreLayoutComponent implements OnInit {
       });
     }
 
-    const variants = item.product?.variants ?? [];
-    const selectedVariant = item.product?.variants?.find(
-      (variant) => variant.id === item.variant_id,
-    );
+    const selectedVariant = item.product?.variant ?? null;
 
     if (selectedVariant) {
       attributes = Object.entries(selectedVariant.values).map(([label, value]) => ({
@@ -92,7 +89,6 @@ export class StoreLayoutComponent implements OnInit {
       attributes,
       quantity: item.cantidad,
       variantId: item.variant_id,
-      variants,
     };
   }
 
diff --git a/src/app/core/services/cart/cart.interface.ts b/src/app/core/services/cart/cart.interface.ts
index 6846737..511f056 100644
--- a/src/app/core/services/cart/cart.interface.ts
+++ b/src/app/core/services/cart/cart.interface.ts
@@ -1,7 +1,7 @@
 export interface CartItemProduct {
   nombre: string;
   imagen: string | null;
-  variants?: CartItemVariant[];
+  variant: CartItemVariant | null;
 }
 
 export interface CartItemVariantOption {
diff --git a/src/app/core/services/cart/cart.service.spec.ts b/src/app/core/services/cart/cart.service.spec.ts
index 08e66e8..bb5b77a 100644
--- a/src/app/core/services/cart/cart.service.spec.ts
+++ b/src/app/core/services/cart/cart.service.spec.ts
@@ -27,6 +27,12 @@ describe('CartService', () => {
         product: {
           nombre: 'Test Product (Size: M)',
           imagen: null,
+          variant: {
+            id: 10,
+            precio: '10.00',
+            stock_tecnico: 1,
+            values: { size: 'M' },
+          },
         },
       },
     ],
diff --git a/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.spec.ts b/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.spec.ts
index 64b24c5..d48c9f4 100644
--- a/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.spec.ts
+++ b/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.spec.ts
@@ -203,17 +203,15 @@ describe('ProductTicketSelectorComponent', () => {
           product: {
             nombre: 'Entrada',
             imagen: null,
-            variants: [
-              {
-                id: 401,
-                precio: '10000.00',
-                stock_tecnico: 1,
-                values: {
-                  sector: { value: 'a', label: 'Sector A' },
-                  seat: '1',
-                },
+            variant: {
+              id: 401,
+              precio: '10000.00',
+              stock_tecnico: 1,
+              values: {
+                sector: { value: 'a', label: 'Sector A' },
+                seat: '1',
               },
-            ],
+            },
           },
         },
       ],
@@ -304,14 +302,12 @@ describe('ProductTicketSelectorComponent', () => {
           product: {
             nombre: 'Entrada',
             imagen: null,
-            variants: [
-              {
-                id: 401,
-                precio: '10000.00',
-                stock_tecnico: 0,
-                values: { seat: '1' },
-              },
-            ],
+            variant: {
+              id: 401,
+              precio: '10000.00',
+              stock_tecnico: 0,
+              values: { seat: '1' },
+            },
           },
         },
       ],
diff --git a/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.ts b/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.ts
index 31058e8..0f94256 100644
--- a/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.ts
+++ b/src/app/shared/components/product-ticket-selector/product-ticket-selector.component.ts
@@ -455,8 +455,8 @@ export class ProductTicketSelectorComponent {
   private createCartRow(item: CartItem, id = this.nextRowId++): TicketSelectionRow | null {
     if (item.variant_id === null) return null;
 
-    const variant = item.product?.variants?.find(({ id }) => id === item.variant_id);
-    if (!variant) return null;
+    const variant = item.product?.variant;
+    if (!variant || variant.id !== item.variant_id) return null;
 
     const selectedValues = this.normalizeCartValues(variant.values);