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The ION Sonar seat harness is crafted for sophisticated kite foilers who demand top-tier support and responsiveness at high speeds.
Similar to the Radar, it features a hybrid shell construction that combines rigid hardshell elements with flexible sections, but with an even lighter build. Equipped with the new Spectre Bar 2 for optimal load distribution, the Sonar also includes a specialised lumbar pad that provides extra support and comfort for the lower back.
Additional features include a C_30 buckle, HD foam padding, a Neo belt, and an integrated Kite knife multitool for safety. Adjustable webbing connects the leg straps to the spreader bar and keeps the hook in a low position. Designed for advanced riders, the Sonar delivers unparalleled control, support, and agility, making it the ideal choice for high-speed foiling.
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Key Features
Hybrid shell construction: Partly molded Curv composite material with strong back support and flexible sideparts. Spectre Bar 2: ION‘s latest innovation in spreader bar technology. Incredible flexibility and a slim outline. Ultra lightweight: Thanks to its light construction combined with a clever mix of materials, this harness ranks as the most durable and lightweight hard shell on the market.
Features
Kite_knife 2.0 multitool: Multitool & safety knife including a Torx (TX20) key and PH3, can be used for foostraps & the modular hook system of ION's spreader bars. Lumbar_Pad: Provides extra cushioning to handle strong forces in foil racing better. Neoprene_Belt: A new and improved technical feature, designed to increase the feeling of flex, twist and overall comfort of wave and freestyle riding. C_30_Buckle: Easy to handle carbon adjustment of the spreader bar webbings with a pleasantly light weight. Leash D-Ring: Kite leash attachement point next to your spreaderbar. Enhanced safety and usability. Light and robust. The side can be varied depending on personal preference.
Materials
55% Polyester 40% Nylon 5% Neopren
Item Number
48252-4723
YOUR FREE ION HARNESS MEASUREMENT SET
This is a paper measurement device to help you work out which size harness you are, including if you are a standard or tall version.
When it comes to your harness, everyone should care about having their individualised fit. Find your perfect individual fit with ION's 3D Fit Technology for all hard shell kite & windsurf harnesses. It keeps you riding longer, protects your back for the years to come and gives you extra confidence on the water.
If you are still unsure on the right size for your ION harness, please come in-store for a free ION harness fitting.
🚚 Shipping Info (UK)
We offer FREE UK shipping on orders over £50. For orders under £50, a small £4.75 shipping fee applies.
Smaller items ship via Royal Mail First Class
Larger or bulkier items go via courier (usually next working day)
We aim to pick and pack orders within one working day. Some larger items may take up to two days to prepare, especially if they require custom packaging or boxing.
📦 Check the stock location shown near the “Add to Cart” button.
Being the UK's Duotone / Fanatic / ION Specalist store we are proud to be the only UK retailer with a live stock feed from their warehouse — so you can shop with real-time confidence.
In-store stock typically ships within 1–2 working days.
Our shop is normally closed on Tuesdays and Wednesdays, but during busy summer months we may process orders more frequently.
Warehouse stock can take 5–10 working days to arrive before dispatch.
Large items from the supplier are often drop-shipped directly to your door, with tracking uploaded once available.
🛡️ For high-value orders (e.g. complete setups or large kits worth thousands), we include a discreet tracking device inside the parcel and provide a free returns label for added peace of mind. We take extra care with these deliveries to make sure everything arrives safely.
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Free delivery over £50*
Please enjoy free delivery on orders over £50 within mainland england.