Sorona® T-Shirt with Pockets, UPF 50+, Cooling, Antibacterial, Retro, Triple-Needle Stitch / Cool Retro Tee N5443

A retro look with futuristic comfort.

A new dimension in basic T-shirts, brought to you by the high-performance fabric “Sorona®.”

At first glance, it’s a classic pocket T-shirt. But in reality, it’s a next-generation piece packed with modern technology and comfort, featuring “Sorona®”—an innovative high-performance fiber developed by DuPont in the U.S.—as its star ingredient. Precisely because it’s a basic item, we’ve paid meticulous attention to the fabric and comfort.

“Sorona®”—a high-performance fabric your skin will love

The fabric, a blend of cotton and Sorona® fibers, is supple and surprisingly smooth to the touch. Yet it also offers excellent shape retention and breathability, maintaining its beautiful texture for a long time even after repeated wear and washing.
This T-shirt also features three additional comfort functions.

UPF 50+ UV Protection: With a UV blocking rate of 95% or higher, it reliably protects your skin from the strong summer sun.
Cooling Touch: It features a cooling-to-the-touch function that feels cool the moment it touches your skin, ensuring a refreshing feel even during sweaty seasons.
Antibacterial Properties: It inhibits bacterial growth on the fabric, preventing the development of unpleasant odors.

A Carefully Designed Relaxed Fit and Sturdy Stitching

The silhouette is a moderately loose, H-line boxy cut. It features dropped shoulders that fall naturally, striking the perfect balance between a relaxed feel and a clean, streamlined look. The
neckline features a custom-dyed ribbed trim, while the chest area includes a pocket with a playful cut.The brand’s label is tucked into the side seams, adding a subtle accent. Sturdy “three-needle, five-thread” (coverlock) stitching is used at key seams such as the sleeves, hem, and neckline.This creates a flat seam that minimizes friction against the skin, delivering a durable yet comfortable fit.

◎Model information 

Male model: 182 cm 60 kg Size XL

Female model: 165 cm 45 kg Size M

BUTTBILL UPF50+ Cool Short-Sleeve T-Shirt

Material: 73% cotton, 27% polyester

Features: UV Protection UPF 50+, SORONA, Antibacterial Cooling Fiber

For: Men & Women

Season: Spring/Summer

Release: June 5, 2025

Size Chart(Unit: cm/Japan Size)

◎Sizes are measured with the garment laid flat. There may be slight variations (1–3 cm) depending on the product and the wearer. Units in the size chart are in cm.

◎Due to lighting conditions, the actual product may look slightly different from the photos. Please keep this in mind when placing your order.