◆◆―――Advance Pre-Order Sales―――◆◆
The next pre-order sales period is scheduled to begin at noon on Monday, October 27, 2025.
【Advance Pre-Order Limited Time Offer】¥500 OFF the regular price!
※Please note that advance pre-order sales may end early if reservations exceed the planned quantity.
Check the RankupSports official account for the latest updates!
If you don't have an Instagram account or are unable to check, feel free to contact us.
【About Pre-Order Sales】
When the pre-order period begins, the “Out of Stock” display will change to an “Add to Cart” button.
Select your desired size and proceed to the checkout page.
【Shipment Schedule】
Shipments are scheduled to begin sequentially starting Monday, November 4th.
Please note that delivery order may vary slightly depending on order details and delivery region.
【Payment Methods】
Credit Card, Bank Transfer, Google Pay, and Apple Pay are accepted.
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【Supervised by a Pro Basketball Team】B.LEAGUE's “Rising Zephyr Fukuoka” × RankUpSports Develop skills usable in actual games right “at home”.
The “Slippery Quiet Ball” – a home ball for serious practice, turning daily drills into future court confidence.
【Quiet Enough for Apartments】Reduces noise and vibration to “everyday life levels”—equivalent to children's footsteps or a home air conditioner's outdoor unit—even when dribbling directly on hardwood floors.
【Same Specs as Official Balls】 Size, weight, and bounce height replicate JBA (Japan Basketball Association) official standards. Unlike previous indoor practice balls, it allows practice with the same feel as game balls.
Prevents timing issues and bad habits while ensuring the
“Penetration Power”
‘Accuracy’
and “Stability” developed through home practice translate directly to games.
【No Excuses for Mistakes】 Covered with the “Slippery Socks” material chosen by over 5,000 players. Not only does it prevent surface degradation and deformation, but it also delivers:
・Stable ball control
・Sharper fingertip feel
・Precise handling
This “slippery feel” that leaves no room for mistakes effectively supports all basketball players in mastering essential skills.
【Still giving up on home practice?】
・Can't practice due to noise issues
・Regular sponge balls feel too different
・Indoor balls degrade too quickly
The Slippery Quiet Ball solves these problems!!
Enter the era of serious home practice.
【Specifications】
＜Size 7＞ Circumference 760mm / Weight 600g
＜Size 6＞ Circumference 725mm / Weight 520g
＜Size 5＞ Circumference 695mm / Weight 470g
※Due to material and manufacturing characteristics, slight variations from listed specs may occur. Please understand this in advance.
¥500 OFF【Pre-order October 27th～】【Pro Basketball Team Supervised】Slippery Quiet Ball Indoor Practice Silent Ball Size 5 to Size 7
・This product is not a competition ball. Please refrain from using it outdoors as it may cause the surface cover to tear, become dirty, or deteriorate.
- Due to the nature of the high density urethane foam, if it gets wet, the water will penetrate into the interior and it will take time to dry. Also, the shape may change due to the absorption of water. If you are concerned about dirt, wipe it lightly with a soft cloth dampened with water, and after maintenance, store it in a dry place away from high temperatures and direct sunlight.
・Due to the manufacturing process and the characteristics of the material, slight unevenness or wrinkles may be found on the surface, but this does not affect the quality. Also, there may be individual differences in bounce depending on the position of the air holes.
- When practicing indoors, choose a place with a flat floor and be aware of your surroundings.
- The print on the surface may fade or deteriorate with use and aging.
・The surface cover cannot be removed. If you forcefully peel off the cover or pull it too hard, it may not function properly.
・Continuous pressure on the Slippery Quiet Ball may cause it to deform. When storing, avoid contact with other balls or practice equipment as much as possible.
・Please carefully read the "Instructions for Use" included with the product before use.
If you have any problems or questions, please contact us at the bottom of the page or through your order history in your My Page.
We also welcome your comments about our products and services.
Reviews
一軒家でもドリブルの音が近隣にも聞こえることが判明！ドォーン、ドォーンと静かな住宅街なら外からでも聞こえます。
急いで色々探しているとSlippery Quiet Ballを見つけて購入！このボールなら夜ドリブルついても問題なさそう。タン、タンと乾いた音がしますが、ドォーン、ドォーンと重低音はしません。安い消音ボールでは重さが無くドリブル練習には不向きだが、これなら重さもありドリブルの跳ね返りも丁度いい。不思議な感じ。子供のスポーツの環境は親が作ると某サイトで見かけたがこれで環境面少しは協力出来たかな？
普通のボールと同じくらい弾みます。
これ以前は中国製のよくあるサイレントボールを使用していましたが、これとは比べ物になりません！
恐らく使用している中身の素材は似たものだと思うのですが、密度が高く硬さがあり重さもあります。
その分で音は多少大きくなりますが、我が家としては許容範囲で
それよりも弾み方が本来のボールに近いことが本当に感動！
オススメします！
自宅でのドリブル練習用に購入しました。
音がかなり抑えられていて、マンションでも気兼ねなく練習できるのが本当にありがたいです✨
我が家は床にマットを敷いていますが、通常のバスケットボールに比べて衝撃が少ないので、フローリングへのダメージも軽減されているように感じます◎
重さやバウンドの感触も普通のボールに近い動きでしっかり練習になります！
室内練習の幅がぐっと広がって、娘のやる気もアップしました！
本当に買ってよかったです！