[Täsmä] Why was it created? What has changed?

Takuro Hayashi, a freelance writer and photographer active in ski, snowboard, and outdoor magazines, who also runs the outdoor equipment store "Transit Higashikawa" in Hokkaido, reported on "Täsmä," Teton Bros.'s proprietary breathable waterproof material, which has been used since last season.

I think the biggest change since switching to "Täsmä" material is that "the unevenness of stuffiness has almost completely disappeared."
For the past five seasons, he has been wearing the TSURUGI JACKET when skiing. His home ground is Mount Daisetsu and its surrounding areas. Sometimes he hikes up to alpine areas over 1,600 meters above sea level, and other times he hits local slopes to try to catch the first powder of the morning.
Since I started wearing TSURUGI, I've had to take off my shell less and less. Whether I'm hiking or at a rest house, I rarely feel hot or stuffy enough to want to take it off. It functions as a hard shell, but doesn't require precise temperature regulation even when the location, weather, or level of exercise changes. This wide range of coverage and comfort is possible thanks to the waterproof and breathable membrane.

In the fall of 2021, the membrane was updated to a new material called "Täsmä," jointly developed by Teton Bros. and Toray. The previous membrane, NeoShell, performed more than adequately. However, "Täsmä" surpasses what I thought was already perfect performance. The impression I got after spending a winter with high expectations based on that slogan is as follows.
For example, on Mount Asahidake in the dead of winter, I stepped on the fresh snow on my splitboard, taking shallow breaths of the cold air that felt almost sharp and painful.
I also had the NeoShell version of TSURUGI in my backpack that day, so I could change shells at key points while walking to compare their usability. I tried them on every 20 minutes at the start of the walk, then picked up the pace and tried them on again when I started to sweat, then tried them on while climbing a steep climb, and then tried them on while skiing, then bought a second one and repeated the process again.

After going on several such mountain hikes, I have come to the conclusion that "Täsmä is less likely to get stuffy, and even in situations where your body temperature rises dramatically, it doesn't get stuffy unevenly."
In terms of specifications, the "Täsmä" has improved water resistance and water-repellent durability. However, what I felt on my body was the improved quality of breathability. Not only does it start to circulate gently before stuffiness sets in, but even if your body temperature rises, there is no heat imbalance in any part of the garment. You almost never experience hot spots on your back or sweating on your chest.

When something changes in apparel, it's hard to pinpoint a clear reason why something is different. Changes in clothing are not so obvious.
But "Täsmä" definitely gives the feeling that something in its quality has changed. It feels as though the existing strengths have been further hammered and polished to a sharper edge. What I had previously thought was perfect is now a joy to experience something even better. And it's a surprise to discover that such a world exists. A feeling of quality I could never have imagined. This new material inspires such emotions.

Perhaps what Täsmä has in place is a margin that kicks in when something is about to break down.

It's a level of functionality that only comes into play in extreme situations.
If that's the case, then it may not be necessary on a regular basis. But that doesn't stop Teton Bros. from compromising. Even if it's overkill for everyday use, they want to create a product that those heading out into the harsh outdoors can confidently use in an emergency. "Täsmä" was created for that purpose, as a key item of determination.