Yamaha Synthetic Key Oil - Heavy

Marsoni

M251S

$10.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Yamaha Synthetic Key Oil - HeavyHeavy blend is perfect for older instruments with loose mechanisms Proprietary blend is designed for use on woodwind key rods and pivot points Prevents corrosion and supports instrument longevity 20ml bottle is a great portable companion and travels easily in any case

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Update: Different color packs fit differently. I've purchased two packages, one all-black and one black with the colorful waistbands. The all-black are a little smaller. IMO the all-black run a half to a full size small, and the black with the colorful waistbands run true to size. Listen, all of our bodies and preferences are so different, but these are perfect for my body and my fit preference. They hit at my bellybutton and I would describe the length as short-boyshorts, but not hipsters. Most importantly, they're cotton, which my body reacts much better to these days.

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Reviewed in the United States on February 13, 2026

Verified Purchase

Tat Phoenix

Birmingham, US

★★★★★ 5

Good quality

Size: Medium, Color: Set-unbl

They fit perfectly and seem well made

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Reviewed in the United States on February 22, 2026

Verified Purchase

Kate

Dallas, US

★★★★★ 5

Will be buying more

Size: X-Large, Color: Set-unbl

LOVE THESE! They’re so comfortable and stretchy.

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Reviewed in the United States on April 24, 2026

Verified Purchase

Cme411

Carnegie, US

★★★★★ 3

They're ok

Size: Large, Color: Set-mu2

These are ok. I'm 5'6", 150lbs. I got a large. The colors are fun. The waist band is comfortable, fits well, doesn't dig in, and sits high enough to not affect a my C-section scar, but they constantly ride up.

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Reviewed in the United States on March 12, 2026