The Next-Generation Knee Sleeves for Record-Breaking Squats
This product meets the criteria for Weight Rank SS — our highest grade, offering exceptional fabric density and rebound performance.
1. Powerful Rebound with Advanced Fabrics
These knee sleeves are designed to help you spring back up from the bottom of a squat. The extra stiff fabric allows you “rebound” back up from the bottom of a squat, which is particularly beneficial for powerlifters and all lifters who challenge themselves to lift heavier weights. The ONI Knee Sleeve PRO fabric focuses on this mechanism and uses the toughest fabric approved within the current IPF rules.
2. Strong Lateral Support
The flexible fabric on the front side and the two extra-strong stitches provide the maximal lateral support to the knee area. Competitors with a medium or wide stance will especially benefit from this feature.
3. Streamlined Fit for Maximum Power
In collaboration with Wataru Kobayakawa, a 14-time winner of the All Japan Powerlifting Championships and many top powerlifting athletes, we have conducted extensive testing to achieve the ideal fit for your maximum power.
About sizes
The sizes shown below are approximate, so we recommend trying them on at our store/gym. Choosing a smaller size is not recommended; these sleeves are designed to fit tight without going size down.
Guideline by weight class
S: up to 66kg class
M: 66kg-83kg class
L: 83kg-105kg class
XL: 105-120kg classs
XXL: 120kg - class
Product Specifications
| Thickness |
7mm Neoprene |
| Height Front |
28.5cm |
| Height Back |
27.0cm |
| Size |
S, M, L, XL |
|
Standard Weight for Grade SS Products
(Total combined weight of left and right sleeves
For shipments from November 2025 onward)
|
S: 910g or more
M: 1020g or more
L: 1120g or more
XL: 1230g or more
XXL: 1340g or more |
| Left–Right Weight Variation |
Within approximately 10g |
| Sales Unit |
1 pair of left and right |
| Available Powerlifting Events |
All Competitions |
| Product Warranty |
180 days after product arrival |
Estimated Delivery and Pre-Order Instructions
Sizes M, L, XL, and XXL are available for pre-order. The estimated shipping will begin sequentially around the end of November. Please note that this is only an estimate and not a guaranteed schedule. As the products are manufactured overseas, unexpected delays of several months may occur.
We regret that it is difficult to provide individual updates regarding delivery status, so all related information will be posted on this page.
To place a pre-order, please add the item to your cart and complete the checkout process. Your pre-order will be confirmed once payment has been received.
Please note that we cannot be held responsible for delays in delivery of pre-ordered items. If you are planning to use the product for an upcoming opening or competition, please consult with us before placing your order.
Disclaimer
*Weight standards for Grade SS products may vary by production batch. Due to slight variations in measurement tools, minor discrepancies based on customer-measured weights are not grounds for returns or exchanges.
*Even within the same size, minor dimensional differences of approximately ±1 cm may occur due to manufacturing tolerances.
*Products purchased through secondary markets such as flea markets are not covered under warranty. We do not provide verification of batch numbers or product grading for such items.
*The actual product color may differ slightly from what is displayed on screen due to monitor settings and lighting.
*Logos printed on the product may have slight misalignments or distortions.
*This product has an expiration date for use in IPF:
International competitions: Until December 31, 2026
Domestic(JAPAN) competitions: Until March 31, 2027
For information on how long this product can be used in each country, please contact the respective national powerlifting federation.
Please note that athletes affiliated with USAPL or IDFPA are not subject to an expiration period.
