The annual T-shirt festival "THE T-SHIRT" at Isetan Shinjuku Store, Men's Building will be held from May 6th (Wednesday, substitute holiday) to June 9th (Tuesday) at the Promotion area on the 1st floor Isetan Shinjuku Store, Men's Building . In 2026, three brands— SUNSPEL , Cross Closet, and Refill—will be participating, with the event running over different periods. This article introduces the appeal of each brand's event. With the weather getting warmer, why not prepare for summer at this event where all the T-shirts you'll want are gathered in one place?

May 6th (Wednesday, substitute holiday) - May 26th (Tuesday)
SUNSPEL Pop-up Store

British luxury everyday wear brand SUNSPEL will be opening a pop-up store for a limited time from Wednesday, May 6th (public holiday) to Tuesday, May 26th.
This pop-up store will feature the brand's iconic classic T-shirts, as well as the Riviera T-shirt worn in the movie "Casino Royale." In addition to the standard white, black, and navy, a wide variety of colors will be available to add vibrancy each season.

SUNSPEL
"Classic T-shirt"
16,060 yen
Left: Pastel Blue Right: Pistachio Bottom: Copper Red * pre-sale at Isetan Shinjuku Store
*General sales begin on Wednesday, May 27th.

These lightweight, classic t-shirts, crafted from high-quality Supima cotton, are meticulously handmade at SUNSPEL own factory in Long Eaton, England. With their comfortable, classic fit, they're a must-have staple in any wardrobe.

Furthermore, for styling in the warmer months, the lineup includes sophisticated summer wear such as a light set-up of a cotton-linen jacket and drawstring trousers, as well as linen shirts and button-down poplin shirts.
Additionally, the classic T-shirt, which will be exclusively available at Isetan Shinjuku, comes in three special colors: copper, pistachio, and pastel blue.

SUNSPEL
"Riviera T-shirt"
15,180 yen

Made from high-quality Supima cotton, this durable yet smooth midweight fabric is perfect for transitional seasons.

SUNSPEL
"Heavyweight T-shirt"
20,240 yen

Made from California-grown Supima cotton, this thick, heavyweight T-shirt has a substantial feel and is finished with a carbon brushing process for a soft, luxurious touch. It features a relaxed fit and a wide-trim crew neck.

SUNSPEL
"Riviera Polo Shirt"
26,180 yen

The polo shirt's design and unique mesh material were developed by SUNSPEL in the 1950s as a comfortable and cool fabric for the French Riviera sun. It features a breathable, lightweight yet soft material and a modern, classic slim fit.

SUNSPEL
"Cotton Linen Jacket"
66,330 yen

Combining the softness of cotton with the breathability of linen, this garment boasts a light and natural feel. It features a slightly shorter length and a three-dimensional silhouette, complete with horn buttons, an inner pocket, and side welt pockets. Lightweight yet elegant, it's perfect for a relaxed look.

SUNSPEL
"Drawstring Trousers"
43,890 yen

These trousers are made from a cotton-linen blend fabric, combining the softness of cotton with the slub texture of linen. They offer excellent breathability and a cool, refreshing feel. Featuring a straight silhouette and a mid-to-low rise, they have SUNSPEL 's signature drawstring waist for adjustable fit.

This pop-up store showcases the essence of SUNSPEL , focusing on high-quality cut-and-sew garments essential for the coming season. Don't miss this opportunity to experience the brand's world firsthand.

View SUNSPEL products at the Mitsukoshi Isetan online store.

May 27th (Wednesday) - June 2nd (Tuesday)
Cross Closet Pop-up Store

+CLOTHET, a brand that has gained popularity for its meticulous attention to fabrics and tailor-supervised designs, will be holding a pop-up store from Wednesday, May 27th to Tuesday, June 2nd.

Cross Closet "Suvin Platinum Tailored T-shirt"
9,350 yen

Cross Closet "Linen Jersey Tailored Ribbed Hem T-shirt"
9,900 yen

Cross Closet "TECHWOOL® Tropical Tailored Jacket"
34,650 yen

Cross Closet "TECHWOOL® Tropical Easy Trousers"
19,800 yen

Cross Closet "GIZA45 Horizontal Collar Shirt"
19,800 yen

Cross Closet "Knit Polo-shirt"
13,200 yen

This event will feature a full lineup of the brand's iconic items, including the extra-long staple cotton "Suvin Platinum" series, the functional "Techwool®" set-up, and the new "Linen Jersey" series.
Furthermore, new items will be available for pre-sale at Isetan Shinjuku Store . Experience the overwhelming quality of the materials, a hallmark of a fabric supplier with 160 years of history, and the comfort supervised by tailors, at the store during this opportunity.

June 3rd (Wednesday) - June 9th (Tuesday)
Refillable Pop-up

LIFiLL, a domestic cut-and-sew brand born from the idea of "filling (FiLL) life (LIFE)," will be holding a pop-up store from Wednesday, June 3rd to Tuesday, June 9th.
This pop-up store will feature summer items from the brand's signature "COTTONY®" and "WOOLISH" lines, bringing together skilled Japanese processing techniques to deliver "a tangible sense of comfort that you feel the moment you touch it."

Refill "COTTONY® TEE"
8,580 yen

Refill "COTTONY® RELAX TAPERED PANTS"
17,600 yen

Refill for "COTTONY® RELAX JACKET"
41,800 yen
*Pop-up only *Available at locations other than Isetan Shinjuku.

Refill "COTTONY® POLO SHIRTS"
17,600 yen

"COTTONY®" is a fabric made from loosely twisted Supima cotton, a process that takes a long time and a lot of effort to complete. In addition to its pleasant feel against the skin, it has a silky smooth texture and an elegant sheen.
This pop-up store will feature the "COTTONY® RELAX JACKET" as an event-exclusive item. Made from T-shirt material, this jacket can be worn for a wide range of occasions, from business to travel, and is a highly versatile item that can be easily washed.

Refill "WOOLISH TEE"
13,200 yen

Refill "GIZA45 OVERSIZED SHIRTS"
27,500 yen

"WOOLISH" uses "SUPER 140'S" merino wool, resulting in a fabric with a beautiful sheen and a softness that feels like cotton to the touch, making it comfortable even when worn directly against the skin.

This pop-up store brings together the brand's signature items and new summer collections all in one place. Why not take this opportunity to visit the store?