Skip to product information
MEN
WOMEN
Product Description
Fusion Flexi Fusion Strike
■ Manufacturer's description quote
The underestimated performance of a small heel wedge
The technical planner of the "FUSION-FLEXI" series, having interacted with many professional athletes, noticed that heel area, Achilles tendon, and calf injuries are common in various sports, and realized that "it is important to accurately reduce the impact on the foot during competition," leading to the development of "FUSION-STRIKE."
"FUSION-STRIKE" is a heel wedge that can be inserted under existing insoles to help prevent injuries and improve athletic performance.
Its effects include cushioning impact upon landing, reducing the burden on the heel area and lower leg (Achilles tendon, triceps surae) with a 5mm heel lift, and assisting acceleration with high-rebound materials.
It also has an assist function for climbing, making it effective for trail running and hikers.
At times, it allows control of the center of gravity balance forward and balance adjustment for leg length discrepancy by using only one leg.
Despite being a small heel wedge, its hidden performance should not be underestimated.
■ Weight: 4g (M size)
■ Drop: 5mm
■ Shoe size guide
[S]: 22.0–23.5cm
[M]: 24.0–26.5cm
[L]: 27.0–29.5cm
* Please match with your shoe size. (Sizes are approximate)
* Please attach to properly fitting shoes.
* Shoes with removable insoles are applicable.
■ Usage precautions
・This product is placed under the insole inside the shoe.
・If it slips, please adhere it with double-sided tape you have.
・Stop use if you feel any abnormalities during use.
・If dirty, hand wash with soapy water and air dry in the shade.
・Do not leave in direct sunlight or places above 60°C. It may deform.
・Due to dye properties, be careful of color transfer from friction, water, or sweat.
・Replacement timing varies depending on sport, position, and frequency of use, but to maintain original function, replacement about every six months is recommended.
・This product is not a medical device for treatment or correction.
・Do not process, modify, or repair this product. It may cause reduced support function or damage.
* Please understand that the actual color, shade, density, and pattern position may differ from the images.
Available Payment Methods
Credit Card Payment
Convenience Store Payment
Digital Wallets and QR Code Payments
Bank Transfer
Japan Post Bank
Cancellations, Returns, and Exchanges
Before Placing Your Order
As a general rule, we do not accept returns or exchanges of merchandise for reasons related to the customer’s preferences, such as “it didn’t look like I expected” or “the size doesn’t fit.” If you have any questions or concerns, please consult with our staff first.
Please place your order after understanding and agreeing to the following points.
・Depending on the device or environment you are using, the color and texture of the product may appear slightly different.
・There may be slight variations in the dimensions listed in the product description.
・Minor scratches or scuffs may occur unavoidably during the manufacturing process.
・Depending on the material of the product, there may be variations in color, texture, or pattern from item to item.
Order Cancellation
As a general rule, we do not accept cancellations after a shipping confirmation email has been sent.
We make every effort to manage our inventory, but if we are unable to secure the items you ordered for unavoidable reasons, we may have to cancel your order.
Purchase Limit
We may impose purchase limits on certain products. Orders placed from multiple accounts believed to belong to the same person, or orders suspected of using bots, may be canceled or the quantity reduced.
*Please note that we assume no liability for any losses, damages, or other adverse consequences resulting from a cancellation.
Returns and Exchanges
While we take the utmost care to ensure the quality of our products and their packaging, in the unlikely event that an item arrives damaged or soiled, or if you receive an item that differs from your order, please contact us via the “Contact Form ” within 7 days of the delivery date. We will cover all associated costs.
・If a replacement item is available, we will replace the item.
・If we are unable to secure a replacement, we will issue a refund.
Please note that we cannot accept returns or exchanges if any of the following conditions apply. We appreciate your understanding.
・If more than 8 days have passed since the product was delivered
・When we determine that the customer has finished using the product
・If the item has been altered, washed, or dry-cleaned
・If any accessories (product tags, warranty cards, bags, boxes, etc.) are lost or damaged
・If odors, scratches, or stains occur while the item is in the customer's possession
・Items that come into direct contact with the skin, such as underwear, socks, and accessories, as well as perfumes and cosmetics, etc.
・If the item is returned without prior notice
About the Listed Prices
We take every precaution to ensure that the product information displayed on this site is accurate. However, in the unlikely event that we discover after payment has been processed that a product’s price was incorrectly displayed on the site, we will contact you and either adjust the price to the correct amount and process the payment, or cancel your order.
Important Notes
*Please note that inventory for this item is shared across our physical stores and other shopping sites operated by our company. We check inventory after receiving your order, so the item may be out of stock in some cases. We apologize for any inconvenience this may cause and will notify you via email if this occurs. Thank you for your understanding.