Say goodbye to the winter blues
Long-lasting punchy articulation and clean sound through the toughest conditions.
Testimonials
(Provided voluntarily, without compensation)
“This stuff works!
“For the first time, I feel like I get that spring/fall rosin punch during the coldest time of the year.
“It’s the first rosin I’ve used that doesn’t have issues with consistency, so I don’t have to overthink when to put it on.
“I am able to get the most delicate and raucous of articulations and sound with everything in between.
Winter
Lasting grab ❄ Clean response ❄ Good 4+ years
🌍 If your country isn’t listed, email me at bassmentrosin@gmail.com to order directly.
I’m Isaac Trapkus – NY Phil bassist and rosin maker.
In 2019, I began researching and experimenting with rosin to understand how it worked and if it could be improved. I wanted to create one that would:
Excel in winter
Last the whole concert
Never go bad
The more I studied, the more I appreciated what Pops and Kolstein had accomplished decades ago. The challenge was to refine that same lasting grip and response with greater seasonal stability and control.
Five years and more than 100 failed versions later, I launched Winter in 2025 — consistent, stable, reliable.
Responsive grab
Winter responds to your dynamics — it grips when you dig in and releases cleanly in lighter passages. After a long, slow movement, you’ll expect to need more rosin, but your bow stays ready for the finale.
Easy strokes
Winter is built for balance and control. In slower passages, it starts a little smoother than Pops, giving a clean, rounded attack. As strokes get shorter and faster, the grip strengthens naturally, keeping clarity and projection without extra effort. Many longtime Pops users now use Winter underneath to maintain reliable grab in cold or dry conditions.
Gum rosin is 80-90% rosin acids. Traditional bass rosins add tackifiers, softeners and other additives that loosen up these acids to increase initial grab of the bow on the string.
Over time, traditional bass rosin becomes brittle. The rosin acids oxidize and pack down into a tight structure. You can add solvent to re-soften the rosin, but the tacky rosin acids have undergone an irreversible chemical change.
Winter bass rosin solves this problem by giving the rosin acids the space and protection they need and virtually stops oxidation. Think of them as “free-range” rosin acids!
There’s much more to lasting grab than this, but it’s one of the major hurdles.
