Sheet updated September 2026
The ION Sol Curv women's 2023 is ION's hard-shell waist harness, specifically designed for the female physique. ION builds its shell from Curv, a material that distributes the load across the entire harness surface instead of concentrating it on your lower back. With a flex index of 11, this harness offers medium stiffness: it's firm enough for solid hold, yet flexible enough to let your torso move freely. Inside, a removable Ergo_Pad provides lumbar support, and the harness comes with both available profiles.
KEY INFORMATION
ION SOL CURV WOMEN 2023 - Curv Hard-Shell Waist Harness
What we like
- Two Ergo_Pads included: You get both a medium support profile and a high profile in the box. Try them both and keep the one that fits best, with no extra purchases needed.
- Curv shell: This 3D molded spine uses a lightweight composite material. This distributes the pull instead of concentrating it.
- Flex index 11: This is ION's mid-range stiffness. You get plenty of support without the rigidity of a competition shell.
- 3D Fit: ION sizes its harnesses based on two measurements: back length and waist circumference. That's why you'll find both regular and tall sizes in the range.
- Women's cut: This isn't a re-profiled unisex model. The line and back height are specifically tailored for women.
- Lightweight: ION advertises the Curv construction as ultralight. You'll definitely feel the difference during long sessions.
Available sizes
Included / Not included
✔️ Included: 1 Sol Curv women's waist harness, 2 lumbar Ergo_Pads (medium support and high support)
❌ Not included: Hook or slider, Waist leash, Bar
DETAILED DESCRIPTION
The Curv Shell: Why It Makes a Difference
A waist harness works under compression. The more pull you experience, the more it tries to ride up and fold. A rigid shell prevents this folding and distributes the force across the entire height of your back. ION uses Curv here, a 3D molded thermoplastic composite. It's lighter than a classic shell while maintaining equivalent stiffness.
The Ergo_Pad: Don't Overlook This Key Component
Inside the harness, a removable lumbar pad determines where the support is applied to your lower back. ION provides two: a medium support profile and a high profile. This is the most important adjustment for your harness, and it costs nothing since both are included. Try both before making your final decision; you'll feel the difference from your very first session.
Flex 11: What It Means on the Water
ION's flex index ranges from soft to very rigid. At 11, the Sol Curv sits right in the middle. It supports your back under sustained pull, but it won't restrict your upper body during rotations. This setting is perfect for most riding disciplines, from freeride to wing, rather than for competitive strapless use where maximum freedom is sought.
Choosing your size
Harness size isn't determined by your clothing size. It depends on your waist circumference and back length. These are the two measurements ION uses to build its 3D Fit system. A harness that's too large will ride up under your ribs, while one that's too small will compress you. The safest option is always to try it on. We have them in stock at our Pornichet store.
FAQ - ION SOL CURV WOMEN 2023
This harness is for the kitesurf or wing rider who wants a hard-shell waist harness with lumbar support, but without the stiffness of a competition model.
The size depends on your waist measurement and back length, not your clothing size. Four sizes are available, from 34/XS to 40/L. Try it on if you are unsure between two sizes.
Yes, both profiles are in the box: one for medium support and one for high support. You choose the one that suits you after trying it.
You will need a hook or a slider, depending on your riding style, and a waist leash. These are not included with the harness.
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