ISOLABLEU Slim Popper — MADE IN JAPAN

BALSAM

A one-of-a-kind slim popper

Hand-selected balsa × armor coat.
An unprecedented buoyancy design that stands vertical even without hooks.
The ultimate weapon for monsters.
Every model ships with a buoyancy-inspection guarantee.
Fearsome hook capacity: two Y-S23 10/0 big trebles plus split rings (225 / 245 / 265).

For the monster that won't open its mouth,
throw this in when it counts.

BALSAM is not a lure we recommend when the fish are feeding hard.
It is “the ultimate weapon, made to wring one monster out of brutal conditions.”
Material, buoyancy, posture, inspection, theory, and time on the water —
all of it distilled into a single point: a one-of-a-kind slim popper.

Three Super Orbits

BALSAM gives form to an action theory unlike any conventional popper.
Proven on the water, its “three super orbits” trip a monster's feeding switch.

01

💥

Explosive Entry Sound

Explosive fish-calling sound

A big splash on entry trips the target's feeding switch, fooling the tuna below into thinking other fish have started to feed. Because it is designed to enter the water vertically, it shifts straight from the post-entry shake into a fine micro-shake, flipping the monster's switch.

02

⬆️

Super Vertical Orbit

Super vertical trajectory

The monster that sees through a horizontal posture is tempted by a vertical stay. Even held still for thirty seconds or more, it is taken quietly. The one-of-a-kind popper that holds a vertical trajectory even without hooks — with absolute buoyancy, guaranteed on every unit, to carry even heavy, oversized hooks.

03

〰️

Hyper Micro Vibration

Hyper-fine vibration trajectory

The hyper-response unique to high-buoyancy balsa. It keeps trembling on wind and wave alone, delivering enormous effect even when the bait is small. In the tiny anchovy bait pattern, it has been observed that the strike turns on for BALSAM alone, inside a feeding frenzy where no other lure draws a single response.

A giant bluefin tuna with BALSAM in its mouth — proof of the vertical trajectory at work

"A hunch confirmed. This buoyancy is unfair."

A BALSAM destroyed by a monster. That, too, is proof of the catch.

In The Water

Surface Action
Hookless Vertical Drift

An obsession born of
a shock on the Genkai Sea

The development of BALSAM began two and a half years ago, in summer, with a shattering encounter on the Genkai Sea — a monster tuna that struck a popper we had built ourselves.

Three of us took it on and still could not bring it in; the humiliation of the hook pulling free with fifty metres to go. To land “that size,” seared into the back of the eye, an entirely new plug was needed.

Meeting BLUEHUNTER

Development began with guidance from BLUEHUNTER, a group of expert anglers from the Owari region. The highest priorities were “a clear distinction from every other lure” and “establishing a leave-it method built on a vertical trajectory.”

“I want a plug that holds a vertical posture the moment it lands, and keeps vibrating finely even with no input at all.”

That single remark set the direction of the whole project.

“Selected balsa,” against the grain of the times

Through trial and error across many materials — urethane resins, EPS, paulownia, cedar — the answer we arrived at was balsa. A notoriously difficult material: inconsistent in quality and weak in strength. Yet a meeting with a timber merchant convinced us of the overwhelming buoyancy of selected balsa. This, we were sure, was the one.

Armour-like durability

At the end of March 2026, we succeeded in a minor change to the top-coat material and method. After forty casting tests against the sharp point of a Big Decoy 10/0, the only damage was where the hook point made contact. No water ingress. An armor coat that surpasses the limits of balsa was complete.

How BALSAM Is Born

An uncompromising production process, and a high reject rate of around 20%. That is why BALSAM is priced as it is.

01

Selecting hand-picked balsa

From the raw block, only the lightest pieces are chosen by eye — exacting selection that accepts material loss enough to surprise even the timber merchant.

02

A demanding cut

Soft, delicate balsa is hard to set up on the lathe; shaping it takes several times longer than ordinary wood.

03

100% buoyancy inspection

After priming, each one is weighted, placed in water, and checked for its floating posture. An analogue process that drives every unit toward the same standard.

Every Unit Inspected
04

Armor coating

The final stage uses the newest coating material and method, overcoming balsa's weaknesses to give it armour-like durability.

Armor Coating

The Lineup

BALSAM 225

¥16,500

Length225 mm
Weight95 g (hookless)
Buoyancy capacity70 g
Floating postureVertical float
Recommended hookBig Decoy 10/0
MaterialSelected balsa
CoatingRevised armor coat
Country of originMADE IN JAPAN

※ Final production run expected late June–early July / production has ended for this season

BALSAM 245

¥17,800

Length245 mm
Weight110 g (hookless)
Buoyancy capacity78 g
Floating postureVertical float
Recommended hookBig Decoy 10/0
MaterialSelected balsa
CoatingRevised armor coat
Country of originMADE IN JAPAN

※ Final production run expected mid-to-late July / production has ended for this season

BALSAM 265

¥18,700

Length265 mm
Weight125 g (hookless)
Buoyancy capacity83 g
Floating postureVertical float
Recommended hookBig Decoy 10/0
MaterialSelected balsa
CoatingArmor coat
Country of originMADE IN JAPAN
Production ended for this season

Regular Colors

BALSAM in the Sardine colour

Sardine

Color 01

BALSAM in the Snow colour

Snow

Color 02

BALSAM in the Mahi Mahi colour

Mahi Mahi

Color 03

BALSAM in the Black colour

Black

Color 04

BALSAM in the Neon colour

Neon

Color 05

New Hologram

From July 2026, the BALSAM 225 and 245 move to a new hologram finish. See the new scale flash for yourself in the photos and footage below.

New Hologram — Close Up
BALSAM 225 five-colour lineup in the new hologram finish
New Hologram — 5 Colors
New hologram BALSAM in the Sardine colour

Sardine

New Hologram 01

New hologram BALSAM in the Snow colour

Snow

New Hologram 02

New hologram BALSAM in the Mahi Mahi colour

Mahi Mahi

New Hologram 03

New hologram BALSAM in the Black colour

Black

New Hologram 04

New hologram BALSAM in the Neon colour

Neon

New Hologram 05

For retailers — the new-hologram product photos are available for download at original size (2048×2048 px).
Save individually: 5 Colors / Sardine / Snow / Mahi Mahi / Black / Neon

Download All (ZIP)

Catch Report — 2026.07

A huge tuna with the BALSAM 245 in its mouth, landed by angler 四方峰樹
2026.07.01 — BALSAM 245 / Angler: 四方峰樹

July 1, 2026 (cloudy). We left port at 4:30 a.m. under discouraging news — “the tuna have hardly been showing lately, so don’t expect much.” The first spot gave no sign, but after about three hours of searching, a report came in and we raced over: a single breach, then the sight of a 100 kg-class fish erupting with its whole body out of the water. As the boats around us hooked up one after another, nerves and impatience crept in.

The captain then spotted two violent spouts in the distance. Running there at full throttle, he found a shimmer on the surface — “Cast!” A throw to 11 o’clock, and on the second jerk a tuna boiled up behind the lure. It refused the pause, but a jerk followed by a stay finally drew the bite. Slack line recovered, hookup confirmed — first run.

Judging by the weight of the pull, it was under 150 kg. Straight into the gimbal and the fight was on — a duel where rod angle decides who holds the initiative, then the tuna’s signature standoff from 30 meters below the surface. Enduring with arms wrapped around the rod and gaining line whenever possible, we forced it to gulp air twice, and with a final assist from the captain the fish was safely landed. About 40 minutes from hookup to capture — 35 of them fought solo.

What made it eat on a single jerk-and-stay after the missed bite, I believe, was BALSAM’s signature high-buoyancy hyper response and the micro-vibration it keeps producing on the stay.

Stockists

As production is in very small batches, BALSAM is carried by these 17 stores only.
For BALSAM, please enquire at the stockist nearest you.
BALSAM 225, 245 and 265 will end production with this year's run. The final batches will reach store shelves in turn — the 225 in late June to early July, the 245 in mid-to-late July (all in very limited quantities).
The next project, “BALSAM 185 ICBM” (a 185 mm, 90 g small popper), is taking time to fine-tune its buoyancy; we expect to announce it in July–August.

Miyagi

Niche Dreamers Market

Izumisawa 17 Store A/P101, 17-8 Izumisawa-cho, Shiogama, Miyagi 985-0062

022-290-7157

Website →

Gunma

TTB UNDERGROUND

2-3-33 Owatari-machi, Maebashi, Gunma 371-0854

Instagram →

Chiba

fishing shop Colony

Utsugi Bldg. 102, 1-10-9 Honcho, Chuo-ku, Chiba City, Chiba 260-0012

043-307-7295

Website →

Saitama

MANIAC FISHING

1851-1 Fukuroyama, Koshigaya, Saitama 343-0032

048-972-5668

Website →

Saitama

September Sessions

HOUSE 3F, 2-3-5 Konan-chuo, Kumagaya, Saitama 360-0114

048-501-7554

Website →

Tokyo

hage

Shinkosha Bldg. 102, 2-11-1 Tokiwa, Koto-ku, Tokyo 135-0006

03-6659-9339

Website →

Kanagawa

ebb & flow

Okazu IK Bldg. 204, 242-1 Okazu-cho, Izumi-ku, Yokohama 245-0003

045-815-3588

Website →

Shizuoka

VEINZ

Misono Bldg. 1F, 5-3 Misono-cho, Numazu, Shizuoka 410-0833

055-941-9781

Website →

Aichi

Perfection

4-31-12 Takagi, Ichinomiya, Aichi 491-0837

0586-64-8536

Website →

Shiga

Salt Anglers Shop hiromi

25-19 Mitsuya-motomachi, Nagahama, Shiga 526-0024

090-1022-1324

Website →

Nara

Bar Amberjack / LUCK ON Fishing NARA

Kawamura Bldg., 9 Konishi-cho, Nara City, Nara 630-8226

050-8881-7773

Website →

Osaka

HEAD & TAIL

660-1 Shindachi-onawashiro, Sennan, Osaka 590-0505

072-482-7178

Website →

Hyogo

BSL anglers factory

3-1-3 Motoyama-nakamachi, Higashinada-ku, Kobe, Hyogo 658-0016

078-779-7427

Website →

Tottori

Splanade

3-17 Kitahama, Ketaka-cho, Tottori City, Tottori 689-0334

0857-30-7183

Website →

Tokushima

PGS Double R

93-1 Suzue-kita, Kawauchi-cho, Tokushima City, Tokushima 771-0123

088-679-1738

Website →

Saga

deepshallow

1-4-3 Watada-tenman-cho, Karatsu, Saga 847-0082

0955-88-9029

Website →

Miyazaki

AMBERJACK

4-84 Aoshima, Miyazaki City, Miyazaki 889-2162

050-3612-7643

Website →

BALSAM

Reach us anytime, 365 days a year, via our Official LINE.
Sold through our stockists only.

Notice for Overseas Customers

We do not deal directly with overseas fishing tackle retailers.
Overseas sales of ISOLABLEU products are handled with the support of UOYA.
If you are interested in our products, please contact UOYA.

For overseas wholesale, please contact  uoya-english.com ↗