Review on Continental Bicycle Tubes Race 28 700x20-25 S42 Presta Valve 42mm Bike Tube Super Value Bundle - Pack of 5 Conti Tubes & 2 Conti Tire Levers for Optimal Performance by Robert Abdi

Seems to be working great. I put it up in the fall, I rode the simulator all winter. Spring is here, still in force. Update: I had a rash from flats. 1 dirt puncture: not the hose's fault. 1 Pinch: Maybe it's because of the tube that it's too weak. 1 puncture near the nozzle where the hose connects to the nozzle guard. Others have noticed this too. Seems to be poor quality control. I have found that when I inflate some tubes on the outside of the tire, they start to bulge at this junction, even with a pointed part at the junction where my tube failed. All in all, they're difficult to rely on for a long drive down the road. The levers that come with it are crap too. One broke after first use. I've never broken a lever like that before. They just look very fragile.