PRONTO, a popular cafe chain in Japan, is introducing its largest-ever drink size, the “Giga Size,” for a limited time this summer. Starting June 9, 2026, customers can enjoy these oversized beverages, which are available in three varieties: iced coffee, iced café au lait, and watermelon juice.
Visitors to Japan during the summer can experience these unique, refreshing drinks that are perfect for the hot weather. The limited-time offer provides a fun and novel way to cool down while exploring Tokyo. The Giga Size drinks are ideal for those looking to try something different and enjoy a generous serving of their favorite summer beverages.
About the Restaurant / Event
PRONTO is a well-known cafe chain in Japan, offering a dual concept of a cafe during the day and a “Kissakaba” or “cafe bar” in the evening. This summer, they are launching their largest drink size yet, the Giga Size, as part of their seasonal menu. The drinks are designed to cater to customer feedback requesting larger sizes and are available exclusively during cafe hours.
Highlights
- Introduction of the Giga Size, the largest drink offering in PRONTO’s history.
- Available in three refreshing flavors: iced coffee, iced café au lait, and watermelon juice.
- Perfect for cooling down during the hot summer months.
- Available at all PRONTO locations across Japan.
Menu / Event Details
| Item | Details |
|---|---|
| Name | Giga Size Drinks |
| Location | PRONTO cafes across Japan |
| Period | June 9, 2026 – September 28, 2026 |
| Price | Iced Coffee: ¥660, Iced Café au Lait: ¥704, Watermelon Juice: ¥935 |