The KARHU Fulcrum technology is designed to keep all forces going forward, reducing braking forces and using your body's natural energy to create a smoother ride. It's what we call the Rolling Effect. Fulcrum Technology provides: Balanced Cushioning, Increased Support, More Energy.
![Karhu US](http://us.karhu.com/cdn/shop/files/Logo_Fulcrum_colors_1500x.png?v=1614325188)
![Karhu US](http://us.karhu.com/cdn/shop/files/new_gif_1500x.gif?v=1621331896)
Ortix Fit shapes your mid sole and upper volumes using data directly collected from over 4 million runner's feet. What started in 2018 with the launch of the Karhu Ikoni the 1st model shaped by ORTIX, we now offer all our footwear models with our ORTIX Fit, based on actual scanning data in regular, HiVo and Hera volumes.
![Karhu US](http://us.karhu.com/cdn/shop/files/ortix_logo_1500x.png?v=1614325188)
![Karhu US](http://us.karhu.com/cdn/shop/files/GIF_ORTIX_1500x.gif?v=1614326598)
The M-lock side panels help secure the shoe around the foot while an inner booty construction remains straight.
![Karhu US](http://us.karhu.com/cdn/shop/files/Asset_5_1500x.png?v=1615558765)
![Karhu US](http://us.karhu.com/cdn/shop/files/MLOCK_1500x.jpg?v=1666188537)
Seamlessly knitted upper patterns placed on the Ortix lasts with zones for support, stretch, and breathability.
![Karhu US](http://us.karhu.com/cdn/shop/files/Asset_3_01b13e9e-b4d3-4964-9e2b-c7d9889872ca_1500x.png?v=1615558765)
![Karhu US](http://us.karhu.com/cdn/shop/files/IDEAL_KNIT_1500x.jpg?v=1666188607)
Our proprietary midsole foam: lighter, more resistant to temperature changes and better cushioning than EVA.
![Karhu US](http://us.karhu.com/cdn/shop/files/Asset_1_cad2bdb9-0840-4e52-b993-4416392848ff_1500x.png?v=1615558765)
![Karhu US](http://us.karhu.com/cdn/shop/files/Aerofom_1500x.jpg?v=1666188632)
Our unique, liquid based foam improves shock absorption and is more durable than other foams.
![Karhu US](http://us.karhu.com/cdn/shop/files/Asset_4_13ab6091-b278-4a1c-958c-0e23d340cb1b_1500x.png?v=1615558765)
![Karhu US](http://us.karhu.com/cdn/shop/files/aerofoam_Nova_1500x.jpg?v=1666188672)
![Men's KARHU Fusion 3.5 F101005](http://us.karhu.com/cdn/shop/files/F101005_1500x.jpg?v=1688379068)
![KARHU-MEN'S-FUSION-3.5-ENSIGN-BLUE-HOT-SPOT-F101005](http://us.karhu.com/cdn/shop/files/KARHU-MEN_S-FUSION-3_8aa2f782-83a2-4464-978d-f9e8515abe7f_1500x.jpg?v=1718790123)
MEN'S FUSION 3.5
ENSIGN BLUE / HOT SPOT
$112.50$150.00
![Men's KARHU Fusion 3.5 HiVo F101805](http://us.karhu.com/cdn/shop/files/F101805_1500x.jpg?v=1688374563)
![KARHU-MEN'S-FUSION-3.5-ENSIGN-BLUE-HOT-SPOT-F101005_mood](http://us.karhu.com/cdn/shop/files/KARHU-MEN_S-FUSION-3_c3f5e5b1-37f4-4e21-b109-f9197307c1a6_1500x.jpg?v=1720093254)
MEN'S FUSION 3.5 HIVO
ENSIGN BLUE / HOT SPOT
$112.50$150.00
![KARHU men's Ikoni 2.0 HiVo wide fit F102800](http://us.karhu.com/cdn/shop/products/F102800_1_1500x.jpg?v=1693238822)
![KARHU-IKONI-2.0-HIVO-IBIZA-BLUE-POSEIDON-F102000_mood](http://us.karhu.com/cdn/shop/files/KARHU-IKONI-2_54172575-e1dc-448a-a9a3-a8e1d0713228_1500x.jpg?v=1720612269)
MEN'S IKONI 2.0 HIVO
IBIZA BLUE / POSEIDON
$105.00$140.00
![Men's KARHU Fusion 3.5 wide fit feet F101800](http://us.karhu.com/cdn/shop/products/F101800_1_1500x.jpg?v=1693238927)
![KARHU-FUSION-3.5-PAGEANT-BLUE-SUMMER-FIG_mood](http://us.karhu.com/cdn/shop/files/KARHU-FUSION-3_1500x.jpg?v=1720096639)
MEN'S FUSION 3.5 HIVO
PAGEANT BLUE / SUMMER FIG
$112.50$150.00
![MEN'S IKONI 2.0 HIVO - GOBLIN BLUE / PUTTY](http://us.karhu.com/cdn/shop/products/F100331_1_1500x.jpg?v=1660578543)
![KARHU-IKONI-2.0-GOBLIN-BLUE-PUTTY-F100345_mood](http://us.karhu.com/cdn/shop/files/KARHU-IKONI-2_63f4ff47-6794-4c14-b46f-862909cfbc2c_1500x.jpg?v=1720101999)
MEN'S IKONI 2.0 HIVO
GOBLIN BLUE / PUTTY
$89.00$140.00
![Karhu Fusion 3.5. Men's neutral running shoe](http://us.karhu.com/cdn/shop/products/F100341_1_1500x.jpg?v=1655827145)
![KARHU-MEN'S-FUSION-3.5-BLACK-DAWN-BLUE-F100341](http://us.karhu.com/cdn/shop/files/KARHU-MEN_S-FUSION-3_1500x.jpg?v=1718788448)
MEN'S FUSION 3.5
BLACK / DAWN BLUE
$112.50$150.00
![Men's Karhu Fusion 3.5 HiVo (wide fit) F100342](http://us.karhu.com/cdn/shop/products/F100342_1_1500x.jpg?v=1655800026)
![KARHU-MEN'S-FUSION-3.5-BLACK-DAWN-BLUE-F100341](http://us.karhu.com/cdn/shop/files/KARHU-MEN_S-FUSION-3_235ef42e-22bc-4248-9cc7-38b856fffd2f_1500x.jpg?v=1720085450)
MEN'S FUSION 3.5 HIVO
BLACK / DAWN BLUE
$112.50$150.00
![KARHU women's Fusion 3.5 F201005](http://us.karhu.com/cdn/shop/files/F201005_1500x.jpg?v=1688137625)
![KARHU-WOMENS-FUSION-3.5-ULTIMATE-GRAY-ORCHID-HUSH-F201005](http://us.karhu.com/cdn/shop/files/KARHU-WOMENS-FUSION-3_015aba4b-050d-4c9e-9bb9-fbf2d4aeb48a_1500x.jpg?v=1718791462)
WOMEN'S FUSION 3.5
ULTIMATE GRAY / ORCHID HUSH
$112.50$150.00
![KARHU women's Fusion 3.5 F201805](http://us.karhu.com/cdn/shop/files/F201805_1500x.jpg?v=1688134301)
![KARHU FUSION 3.5 HIVO ULTIMATE GRAY / ORCHID HUSH](http://us.karhu.com/cdn/shop/files/ORCHID_HUSH_1500x.jpg?v=1718032821)
WOMEN'S FUSION 3.5 HIVO
ULTIMATE GRAY / ORCHID HUSH
$112.50$150.00
![Women's KARHU Fusion 3.5 neutral running shoe 2023 F201000](http://us.karhu.com/cdn/shop/products/F201000_1_1500x.jpg?v=1693238897)
![KARHU-fusion-3-5-hivo-crystal-grey-icy-morn_mood](http://us.karhu.com/cdn/shop/files/KARHU-fusion-3-5-hivo-crystal-grey-icy-morn_mood_1500x.jpg?v=1720616664)
WOMEN'S FUSION 3.5
CRYSTAL GREY / ICY MORN
$112.50$150.00
![Karhu WOMEN'S IKONI 2.0 - CHINO GREEN / MISTY BLUE F200335](http://us.karhu.com/cdn/shop/products/F200335_1_1500x.jpg?v=1693300130)
![KARHU-WOMENS-IKONI-2.0-CHINO-GREEN-MISTY-BLUE-F200335](http://us.karhu.com/cdn/shop/files/KARHU-WOMENS-IKONI-2_1500x.jpg?v=1718789388)
WOMEN'S IKONI 2.0
CHINO GREEN / MISTY BLUE
$89.00$140.00
![WOMEN'S SYNCHRON 1.5 - AQUIFER / SILVER](http://us.karhu.com/cdn/shop/products/F200344_1_1500x.jpg?v=1659602875)
![KARHU-WOMENS-SYNCHRON-1.5-AQUIFER-SILVER-F200344](http://us.karhu.com/cdn/shop/files/KARHU-WOMENS-SYNCHRON-1_1500x.jpg?v=1718790273)
WOMEN'S SYNCHRON 1.5
AQUIFER / SILVER
$120.00$160.00
![Women's Fusion 3.5 running shoe](http://us.karhu.com/cdn/shop/products/F200346_1_1500x.jpg?v=1655886075)
![KARHU-WOMEN'S-FUSION-3.5-BLACK-DAWN-BLUE-F200346](http://us.karhu.com/cdn/shop/files/KARHU-WOMEN_S-FUSION-3_1500x.jpg?v=1718788191)
WOMEN'S FUSION 3.5
BLACK / DAWN BLUE
$112.50$150.00
![Women's Karhu Fusion 3.5 HiVo running shoe, wide fit](http://us.karhu.com/cdn/shop/products/F200347_1_1500x.jpg?v=1655822539)
![KARHU FUSION 3.5 HIVO BLACK / DAWN BLUE](http://us.karhu.com/cdn/shop/files/DAWN_BLUE_1500x.jpg?v=1718033022)
WOMEN'S FUSION 3.5 HIVO
BLACK / DAWN BLUE
$112.50$150.00
![Karhu Ikoni Ortix HiVo F200324 lateral](http://us.karhu.com/cdn/shop/products/F200324_1_1500x.jpg?v=1629378706)
![KARHU-IKONI-2.0-JET-BLACKDARK-SLATE-F200326_mood](http://us.karhu.com/cdn/shop/files/KARHU-IKONI-2_ee4017f6-28f0-432c-9827-56185b2d36e6_1500x.jpg?v=1720617999)
WOMEN'S IKONI 2.0 HIVO
JET BLACK/DARK SLATE
$105.00$140.00
![karhu women ikoni ortix hivo jetblack folkstone grey front left](http://us.karhu.com/cdn/shop/products/Photo_1_08a7b762-e86e-4f89-a4f4-653f933fbfee_1500x.jpg?v=1609335873)
![KARHU-women-ikoni-ortix-jetblack-folkstone-grey_mood](http://us.karhu.com/cdn/shop/files/KARHU-women-ikoni-ortix-jetblack-folkstone-grey_mood_1500x.jpg?v=1720103546)
WOMEN'S IKONI 1.5 HiVo
JETBLACK/FOLKSTONE GREY
$84.50$130.00