What role do the thumbholes at the cuffs and the flat seams actually play when worn?
While looking through the description of the long-sleeve T-shirt, I noticed that there are thumbholes at the cuffs and the seams are finished flat. I am curious about the usefulness of including sportswear-like details on everyday clothing.
These are features that help you move comfortably during daily life and light exercise by wrapping around and protecting the hand area[1] and reducing chafing from seams touching the body[2].
It captures 2 uses—urban life and light exercise—in 1 piece[3]. nozzle quiz's Trace Washed L/S Tee features the comfortable silhouette of everyday wear while including functional features needed when moving your body significantly[4].
Seams do not catch on the body. This is because Flatlock sewing, which finishes the seams inside the garment flat, was applied[5]. Flatlock is a technique of joining both edges of the fabric flat side by side without overlapping and stitching them. Because the seam allowance touching the skin does not stick out, it reduces the discomfort of skin chafing from friction even when sweating or moving repeatedly. On the outside, coverstitch craft details are added along with tone-on-tone embroidery to provide a neat finish[6].
The thumb slit made at the end of the sleeve helps protect the hand area[7]. When you hook your thumb into the slit, the sleeves do not get pulled up toward your elbow when reaching high or being active. Paired with lightweight and highly stretchy functional fabric, these 2 details work together to support comfortable movement at any time, from everyday life in the city to light exercise[8].

It has not yet been confirmed how the sleeves fall at the wrists when worn without hooking into the thumb slits.
Product measurements
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Basalt Wash - Trace Washed L/S Tee
Measurements
| Part | Medium | Large |
|---|---|---|
| 총장 | 70cm | 72cm |
| 어깨너비 | 60cm | 58cm |
| 소매장 | 58.25cm | 60cm |
| 가슴단면 | 62.5cm | 64.5cm |



