Which is better for sand and snow?

The Wooken. Its 4-inch fat tires spread weight and float on loose surfaces where the VIVI's standard tires dig in.

Which is better for hilly trails?

The VIVI. Its 21-speed gearing lets you pedal with the motor on climbs, and the 26-inch wheels roll over obstacles better.

Is the VIVI worth it over the Wooken?

Yes for most riders. It costs $60 less, has bigger wheels, more gears, more claimed range and a UL2849 safety certification.

Which has more range?

The VIVI claims up to 50 miles per charge; the Wooken claims up to 45. Both figures assume low assist and flat ground.

Which fits a shorter rider?

The Wooken. Its 20-inch frame and wheels sit lower, while the VIVI's 26-inch frame suits average to tall adults.

The VIVI states SGS certification to UL2849, the battery safety standard. The Wooken listing states no certification.

Wooken 20" x 4.0 Fat Tire Electric Mountain Bike 750W 48V 499Wh vs VIVI 26" Peak 1000W Electric Bike, 22MPH 48V Removable Battery Electric Mountain Bike, 21 Speed

Buy the VIVI if you want a full-size 26-inch mountain bike with more range and a lower price: $319.99 at Target as of October 31, versus $379.99 for the Wooken. Buy the Wooken if you ride sand, snow or rough trails and want the 4-inch fat tires and a smaller, more compact 20-inch frame. The VIVI is the better value on paper; the Wooken is the more specialized off-road machine.

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