Continental Unisex's 42mm MTB Presta Valve Inner TubeBlack, 27.5 x 1.75 2.5Inch/42 mm

I’ve been a cyclist for years, and I’ve had my share of flat tires. I was a professional at the "Walk of Shame." But then I bought the Continental 42mm MTB Presta tube. This isn't just an inner tube; it's a superhero. It has conquered thorns, glass, and countless angry-looking rocks without so much as a whisper of a puncture. It holds air like a politician holds a promise, only this one is for real. I now ride with a newfound confidence, a tiny piece of rubber having restored my faith in the world. This tube has brought me more peace of mind than a well-tuned suspension. I am no longer a cyclist; I am a conqueror of trails. Five stars. Don't buy any other tube.

High quality tubes. Cyclist here

Works as it should.

I didn’t know I was buying a tube with a Presta valve. Luckily my new cordless pump has a Presta adapter. But I couldn’t use the pressure indicating cap that fits only on standard Schrader valve.

Very sturdy, thick material. Works well, needed this stem to fit the rim and it works like a charm. Good quality for a decent price.

Well made will buy again

Seem slightly oversized for my 27.5 wheel but otherwise they are great.

Super easy to install, there's a mounting ring that let's you attach the valve to the tire which is SO much easier. Ride is nice tho, can't complain.