The Nova Curv 10 features ION's revolutionary thermal composite Curv material known for its light weight and great durability. With a flex index of 10, all loads are perfectly distributed by the rigid 3D contoured center section. Together with the high girth, this medium-stiff harness supports the rider exactly where it is needed. Flexible side parts provide great freedom of movement for radical movements on the water. In addition, the EVA interior prevents the harness from riding up. In addition, the Nova Curv 10 is equipped with ION's popular C_bar 3.0 and Kite_Knife Multitool 2.0. The Apex Curv 13 was also equipped with ION's popular C_bar 3.0 and Kite_Knife Multitool 2.0. The C_Bar 3.0 includes a dyneema webbing slider and comes without a hook - so you can choose between ION's hook options to suit your personal preferences. The hook must be purchased separately.