From the manufacturer
NEMO EXTREMO CENTER CART
Nemo Extremo Center Cart is as tough and rugged as the name sounds. This cart combines our new flat-free, vibration reducing, solid urethane tires with a super heavy-duty frame design. Offering a superior load capacity, the Nemo Extremo takes the abuse of heavy loads and pitted paths. Transport your canoe or kayak over rocky portages.
The cart frame breaks down for easy storage in your garage or kayak hatch. Maximum load capacity is 250 pounds.