FASHION
2026.02.18
【Workman】Is +20℃ real? I tried the "Procore Hot Arm Sleeve" outdoors in winter.
What are the impressions of wearing Workman's "Procore Hot Arm Sleeves" outdoors in winter for one hour? I summarized the use cases of this non-restrictive gear, focusing more on how it resists cooling rather than warmth, based on personal experience.
When you want to adjust the temperature, the "Procore Hot Arm Sleeve"
During the still cold winter days, there's no avoiding the need for cold protection when spending extended time outdoors. However, wearing too many layers makes it cumbersome to move, and staying too lightly dressed is understandably cold. Having experienced both, I was looking for gear that emphasizes "not dragging along cold" rather than "adding warmth."
Choosing an arm sleeve allows me to supplement only the necessary areas, and I can remove it if I get too hot, making it more realistic to adjust temperature according to movement rather than bundling up.
This time, I compared being outside for about an hour in just a long-sleeve T-shirt and while wearing the Workman Procore series, developed with professional craftsmen's opinions—the "Procore(R) Hot Arm Sleeve."
Choosing an arm sleeve allows me to supplement only the necessary areas, and I can remove it if I get too hot, making it more realistic to adjust temperature according to movement rather than bundling up.
This time, I compared being outside for about an hour in just a long-sleeve T-shirt and while wearing the Workman Procore series, developed with professional craftsmen's opinions—the "Procore(R) Hot Arm Sleeve."
The first thing I felt was a surprisingly good fit
Honestly, when I first put my arms through, there was a sensation of "being constricted." The size cannot be chosen (one size fits all), so it looks tight on my frame. However, it wasn't uncomfortably tight to the point of being painful.
It fits snugly on the arms, so even when moving, it stays in place solidly. This fit might divide opinions, but at the very least, it wasn't to the level of being distracting and preventing focus.
The difference from a long-sleeve T-shirt is more about "resistance to cold" than "warmth"
What was surprising during this wear was the change that I felt less cold rather than the moment I felt "really warm."
In a state with just a long-sleeve T-shirt, while there are no issues when moving, if I slow down a bit or stop, I start to feel a chill creeping in from my arms. Once I begin to feel cold, that sensation lingers for a while even if I start moving again...
In a state with just a long-sleeve T-shirt, while there are no issues when moving, if I slow down a bit or stop, I start to feel a chill creeping in from my arms. Once I begin to feel cold, that sensation lingers for a while even if I start moving again...
When wearing arm sleeves, the chill doesn't stay on my arms even after stopping. It feels like the warmth increases rather than just preventing my body temperature from completely dropping.
What I realized after using it for an hour was that I can create a "time to finish"
What I felt after using it was that I no longer needed to change my pace due to the cold. Until now, I often unconsciously made decisions like, "It's getting a bit cold, so let's wrap it up," or "Let's head back before my arms get cold." However, with the arm sleeves on, the cold doesn't become a valid reason. I naturally started making choices like, "Let's move a bit more," or "Let's stay outside a bit longer."
As a result, I was able to create a "time to finish" without leaving things half-done even outdoors in winter. This was the biggest change.
As a result, I was able to create a "time to finish" without leaving things half-done even outdoors in winter. This was the biggest change.
The effectiveness was more than the figure of +20℃
Honestly, I couldn't say for sure if I felt the exact value of "+20℃," but what I truly experienced was that my arms didn't cool down rapidly after stopping movement, and I had a sense that my body temperature decreased slowly. It felt less like equipment to add warmth and more like something that prevented the sensation of cold. Thinking this way, I felt it made the usage of this arm sleeve easier to understand.
Rather than adding bulky winter clothing, I can enjoy wintertime more comfortably
When it comes to cold protection, people tend to focus on "bundling up." However, what I felt from using it was that it's more comfortable to adjust your body sensation than to increase the amount of gear. By just adding the arm sleeve, I can enjoy winter for longer while maintaining ease of movement. I felt that this sense of balance could be a practical option for active scenes in winter.
Product Name: Procore(R) Hot Arm Sleeve
Price: 980 yen
Color: Black, Stone Black, White
Size: Total Length: 41cm, Arm Circumference: 24cm, Cuff Circumference: 14cm
Material: 95% Polyester, 5% Polyurethane
● Workman
Interview and Text by SYURI
Product Name: Procore(R) Hot Arm Sleeve
Price: 980 yen
Color: Black, Stone Black, White
Size: Total Length: 41cm, Arm Circumference: 24cm, Cuff Circumference: 14cm
Material: 95% Polyester, 5% Polyurethane
● Workman
Interview and Text by SYURI



















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