In June 2025, Japanese convenience store chain Lawson celebrated its 50th anniversary with the “Mega Size Challenge” campaign, which was a massive hit. In response to its overwhelming popularity, the campaign is set to return for two weeks, starting Tuesday, November 18, 2025!
The concept of this campaign is simple yet incredibly appealing: “Get 50% more content in popular products for the same price.” At Lawson stores across all 47 prefectures of Japan, a wide variety of fan-favorite items—including bento boxes, onigiri (rice balls), sandwiches, and sweets—will be available in surprisingly large portions.
Many items are available in limited quantities and often sell out almost immediately upon release, making this an unmissable event for fans of Japanese convenience stores. The featured products change weekly, so we recommend checking the lineup in advance.
Week 1: Increased Size Products Launching Monday, Nov. 17 & Tuesday, Nov. 18, 2025
Kicking off the campaign, the first week features a powerful lineup of Lawson’s signature products.
Mega Size! Premium Roll Cake
You can’t talk about Lawson’s sweets without mentioning the “Premium Roll Cake.” Often credited with sparking the convenience store sweets boom in Japan, this product features a moist cake and a rich, milky cream blended with fresh cream from Hokkaido. Even the regular version is highly satisfying, but this time it appears with a 50% increase in total weight. The price remains just 214 yen (tax included). It’s a must-try, even if you don’t have a sweet tooth. The cake will be available starting the evening of Monday, November 17.
Mega Size! Japanese-Style Sea-Chicken® Mayonnaise Onigiri
Onigiri (rice balls) are a Japanese soul food and one of the most convenient meals available. Among them, the absolute classic, “Sea-Chicken Mayonnaise,” has become unbelievably large. This version also has a 50% increase in total weight, and you’ll feel its substantial heft the moment you pick it up. Priced at 181 yen (tax included), it’s the perfect way to get a satisfying boost on a busy morning or when you’re feeling a bit hungry. Available from Tuesday, November 18.
Mega Size! Ham Sandwich
Japanese convenience store sandwiches are known for their soft bread and quality fillings. For this “Ham Sandwich,” the star of the show—the ham—has been increased by 50%. Layers upon layers of ham practically overflow from between the slices of bread. Enjoy this simple yet luxurious taste for the amazing price of 343 yen (tax included). It goes on sale Tuesday, November 18.
Mega Size! Naporitan
Naporitan is a classic example of *Yoshoku* (Western-style Japanese cuisine), made by stir-frying thick spaghetti with a ketchup-based sauce. Its nostalgic flavor, reminiscent of old-school coffee shops, is very popular, and now it comes as a true “mega size” dish with the weight of the noodles increased by 50%. At 697 yen (tax included), it’s perfect for those looking for a hearty meal. Available from Monday, November 17.
Dekakaraage-kun 3-Flavor Mix
“Karaage-kun” is Lawson’s perennially popular bite-sized fried chicken, a staple hot snack sold at the register. This time, it’s “Dekakaraage-kun,” a version larger than the original, in a special flavor that lets you enjoy three tastes in one: a Regular-flavored coating, with a mix of spicy Red and rich Cheese flavors inside. Furthermore, for a limited time from Tuesday, November 18 to Monday, November 24 (a national holiday), you’ll get one extra piece for a total of six, instead of the usual five. The price is 278 yen (tax included).
Week 2: Increased Size Products Launching Monday, Nov. 24 & Tuesday, Nov. 25, 2025
The second week of the campaign also features a lineup of attractive products.
Mega Size! Fluffy & Chewy Fresh Chiffon Cake
This is a dessert featuring a fluffy, chewy chiffon cake filled with a generous amount of whipped cream. As its name suggests, its charm lies in a melt-in-your-mouth texture, much like a fresh pastry. This item also has its total weight increased by 50%, making it an irresistible volume for cream lovers. It costs 257 yen (tax included) and will be available from the evening of Monday, November 24 (a national holiday).
Mega Size! Large Chocolate Cream Puff (Chocolate Cream & Whip)
This cream puff features a crispy choux pastry shell packed with both chocolate cream and whipped cream. For the campaign, the two types of cream are increased by a total of 50%, ensuring a mouthful of cream with every bite. The affordable price of 194 yen (tax included) is another great point. It will be released around the evening of Monday, November 24 (a national holiday).
Mega Size! Takana Mentaiko Onigiri
Spicy *takana* (pickled mustard greens) and *mentaiko* (spicy cod roe) are an outstanding match with rice and are extremely popular as onigiri fillings. This exciting combination is now available with a 50% increase in total weight. Priced at 192 yen (tax included), it goes on sale Tuesday, November 25.
Mega Size! Tuna & Egg Sandwich
Tuna salad and egg are a classic combination for sandwich fillings. This time, the tuna salad has been increased by 50%, making for an even more satisfying sandwich. The price is 297 yen (tax included). Available from Tuesday, November 25.
Mega Size! Katsu Curry (Medium Spicy)
Katsu curry—a hearty dish beloved across Japan—features a large *tonkatsu* (pork cutlet) on a bed of rice, all covered in curry. In this campaign, the pork cutlet is over 50% larger. Enjoy the combination of spicy, medium-hot curry and a thick, meaty cutlet for 697 yen (tax included). It goes on sale Tuesday, November 25.
Mega Size! Sauce Yakisoba
Sauce yakisoba is a classic stir-fried noodle dish common at Japanese festivals and in home cooking. Its fragrant sauce aroma is sure to whet your appetite, and this version also has its noodle weight increased by 50%. This dish, which lets you enjoy plenty of noodles to your heart’s content, is available for 538 yen (tax included). It will be released on Monday, November 24.
This incredibly generous campaign is something you could only find at a Japanese convenience store. If you happen to be traveling or staying in Japan during this period, why not stop by a Lawson to enjoy this “mega-sized” experience for yourself? However, please note that all items are available only while supplies last, so we recommend grabbing them as soon as you see them.
Post a Comment