NTB Junior Kayak Rental Spec. This is a fantastic, stable kayak to introduce junior kids to the water. Weighing just 10KG and having a capacity of 40KG, we have specced this out with built in side carry handles and blanked off the hatches seen in the photos. This is to simplify the kayak for its sole purpose of getting little ones out on the water. We have had great influence in the designs and amendments of this kayak and increased the thickness of the HDPE plastics in order to live up to the needs of the rental market.