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Product Description
Fusion Flexi Fusion Strike
■Excerpt from the manufacturer's description
The Underestimated Performance of Small Wedge Heels
The technical planners behind the “FUSION-FLEXI” series, having worked with numerous professional athletes, observed that injuries to the heel area, Achilles tendon, and calf are common across various sports. This led them to realize that “it is crucial to effectively cushion the impact on the feet during competition,” and they developed “FUSION-STRIKE” based on this insight.
"FUSION-STRIKE" is a heel wedge that, when simply placed under your existing insoles, helps prevent injuries and improve athletic performance.
In terms of benefits, it cushions the impact upon landing and reduces strain on the heel area and lower leg (Achilles tendon and triceps surae) thanks to a 5° heel lift, while the high-rebound material helps enhance acceleration.
It also features an assist function for uphill climbs, making it effective for trail runners and hikers alike.
In some cases, shifting the center of gravity forward or using only one leg can also help compensate for a leg-length discrepancy.
Although it’s a small wedge heel, its hidden capabilities shouldn’t be underestimated.
■Weight: 4 g (Size M)
■Drop: 5 mm
■ Shoe Size Guide
[S]: 22.0?23.5cm
[M]: 24.0?26.5cm
[L]: 27.0?29.5cm
*Please choose the size based on your current shoe size. (Sizes are for reference only.)
*Please wear these with shoes that fit your feet properly.
*This applies only to shoes with removable insoles.
■Precautions for Use
・This product is designed to be placed under the insole inside your shoes.
・If it shifts out of place, please secure it using the double-sided tape provided.
・If you experience any abnormalities while using this product, please stop using it.
・If it gets dirty, hand-wash it with soapy water and let it air-dry in the shade.
・Do not leave the product in direct sunlight or in places where temperatures exceed 60°C. Doing so may cause it to warp.
・Please note that due to the nature of the dyeing process, the color may transfer due to friction, exposure to water, or sweat.
・While the recommended replacement interval varies depending on the sport, position, and frequency of use, we recommend replacing them about once every six months to ensure they perform as intended.
・This product is not a medical device intended for therapeutic or corrective purposes.
・Do not modify, alter, or repair this product. Doing so may impair its performance or cause damage.
*Please note that the actual color, shade, intensity, and pattern placement of the product may differ from those shown in the image.
■Excerpt from the manufacturer's description
The Underestimated Performance of Small Wedge Heels
The technical planners behind the “FUSION-FLEXI” series, having worked with numerous professional athletes, observed that injuries to the heel area, Achilles tendon, and calf are common across various sports. This led them to realize that “it is crucial to effectively cushion the impact on the feet during competition,” and they developed “FUSION-STRIKE” based on this insight.
"FUSION-STRIKE" is a heel wedge that, when simply placed under your existing insoles, helps prevent injuries and improve athletic performance.
In terms of benefits, it cushions the impact upon landing and reduces strain on the heel area and lower leg (Achilles tendon and triceps surae) thanks to a 5° heel lift, while the high-rebound material helps enhance acceleration.
It also features an assist function for uphill climbs, making it effective for trail runners and hikers alike.
In some cases, shifting the center of gravity forward or using only one leg can also help compensate for a leg-length discrepancy.
Although it’s a small wedge heel, its hidden capabilities shouldn’t be underestimated.
■Weight: 4 g (Size M)
■Drop: 5 mm
■ Shoe Size Guide
[S]: 22.0?23.5cm
[M]: 24.0?26.5cm
[L]: 27.0?29.5cm
*Please choose the size based on your current shoe size. (Sizes are for reference only.)
*Please wear these with shoes that fit your feet properly.
*This applies only to shoes with removable insoles.
■Precautions for Use
・This product is designed to be placed under the insole inside your shoes.
・If it shifts out of place, please secure it using the double-sided tape provided.
・If you experience any abnormalities while using this product, please stop using it.
・If it gets dirty, hand-wash it with soapy water and let it air-dry in the shade.
・Do not leave the product in direct sunlight or in places where temperatures exceed 60°C. Doing so may cause it to warp.
・Please note that due to the nature of the dyeing process, the color may transfer due to friction, exposure to water, or sweat.
・While the recommended replacement interval varies depending on the sport, position, and frequency of use, we recommend replacing them about once every six months to ensure they perform as intended.
・This product is not a medical device intended for therapeutic or corrective purposes.
・Do not modify, alter, or repair this product. Doing so may impair its performance or cause damage.
*Please note that the actual color, shade, intensity, and pattern placement of the product may differ from those shown in the image.
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.