The 2019 ION Kite Waist Harness Apex Curv 10 Black features ION's revolutionary hardshell harness construction for exceptional support that is ultra light and super durable. This new Thermo Composite CURV Material sets a new bar for the industry. The CURV Composite material provides extra support in the middle with more flexible sides to give you support where you want it without restricting motion The Apex CURV 10 is a TEN on ION's 1-20 flex index, striking a nice balance for most between direct feel and comfort. 3D Plus Spine combined with a high back provide plenty of support to keep you on the water all day. ION's easy in easy out C_Bar with four-point adjustments allow set it and forget it fitting. Inside EVA optimizes comfort where the harness meets the body. The Apex Curve 10 is an outstanding harness for those who will only tolerate the best.