

Q&A
Are they suitable for riding in summer? Yes, they are suitable for riding in summer conditions for shorter rides, like a 2 hour race or a shorter time trial. They are also well suited for damp and windy conditions, but not for winter. We do not recommend them if you're spending 5 hours in the saddle riding through the Alps in July, though. Are the FastStream Aero Shoe Covers also compatible with mountain bike shoes? No, the GripGrab FastStream Aero Shoe Covers are only meant to be used with road cycling shoes. How many watts do they save? We tested these dial covers together with the professional riders of Uno-X Mobility Pro Cycling at 45km/h, where they saved 10 watts. Are the FastStream Aero Shoe Covers wind- and waterproof? They are windproof, but not waterproof. They will withstand road spray and can simply be wiped clean after your ride. Do not put them in a washing machine.