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.
Winter Go
$35 (USD)
Free US Shipping
**Limited holiday batch because these take too much time to make!
Reserve yours now for the Dec 1 release.
Never leave your sound behind.
❄ Same Winter formula – 2/3 the size. Clip it and forget it!
We’ve all had that moment of panic: you arrive at the gig, unzip your case, and realize your rosin is back at home. With Winter Go, that’s a problem of the past.
What's inside
❄ Designed for students and gigging bassists, Winter Go is your “in case of emergency” rosin. It features a quick-clip that anchors the container securely to your keychain, backpack, or bow case. At the gig, leave the container attached and take the rosin and lid with you.
❄ A neodymium magnet is attached directly to the rosin and secures the rosin to the lid. This prevents the rosin from sticking to the container, and allows you to easily detach the rosin and snap it directly onto any metallic music stand that lacks a shelf.
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.
