But it wasn't until she put on her first pair of skates that she realized just how much her weight was slowing her down.

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The pair also has an adequate amount of heft without being overbearing when added to the weight of an already packed rucksack.

ENGADGET

The two placed a pair of gloves down on center ice, and Mr. Martin executed tight, figure-eight turns while shifting weight between inside and outer skates.

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Built of plastic to save weight, it was more akin to a scooter than to a bicycle, and it ran on a pair of lead-acid batteries, similar to those under the hood of a car.

NEWYORKER: Green Giant