I have an older API climber as well and it weighs around 33lbs. Many of the newer climbers are much lighter. Generally between 18-22lbs. A lot of guys looking for the lightest weight climber recommend the Lone Wolf sit and climb. But at the price of $350 it's going to be one of the more expensive. Summits sit and climb models are probably the most popular and weigh around 22lbs or so.