The Sol Curv 11 features ION's revolutionary thermal composite CURV material known for its light weight and great durability. It offers an outstandingly light yet incredibly robust harness construction. With a flex index of 11, it is one of the medium-stiff to stiff models in ION's product range. All loads are distributed perfectly through its stiff 3D pre-shaped center part. Together with the low outline, this medium-stiff harness offers great freedom of movement, further enhanced by the flexible side parts. On top, the Sol Curv 11 is equipped with ION's popular C_bar 3.0 and Kite_Knife Multitool 2.0. The C_Bar 3.0 comes without the hook ? therefore you can choose between ION's hook options to fit your personal preferences. The hook must be purchased separately.