The Trekking model weighs 1.3 kg. The Comfort weighs 1.4 kg.
The Seatylock is placed in the center of gravity of your bike so you won't get the feeling of carrying any additional weight while cycling.
And what's more - your current saddle weighs between 200-600 gr. aprox, and you still need to lug around a heavy, inconvenient lock.
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