Kegal balls are called a kegel exerciser. The word kegel usually refers to a method of exercising the love muscles, but it was named after a gynecologist Arnold Kegel, M.D. who invented the exercises. A person does these exercises for a number of reasons such as to improve bladder control. 

Recommended by physical therapists and physicians. Ben wah ball exercises improve the strength of pelvic floor muscles, increasing bladder control. 
Waterproof, hypoallergenic, and hygienic. No assembly required. Simple to clean. Includes easy instructions, silicone string for safe removal, and hygiene pouch. 

Exercise Methods 

There are several different ways to use it for kegel exercising. Here are some of the different methods for the smart balls which are a pair of kegel balls connected together with a cord at the end. 

1. The most common, insert the balls inside and contract on them in repetitions. You can insert both balls or just one ball and leave the other one out. 

2. Insert the balls and tug on the cord. As you tug on the cord, flex your muscles to keep the balls from being pulled out. 

3. After putting the balls in, try to use your muscles to push the balls out without using the cord. 

Attention: 
this design is without any idea about "with counter weights inside"and just solid kegel ball on a sting 

Size: 
ball diameter:3.5cm 
length:19.8cm 

EROKAY is a US registered trademark and all EROKAY items are manufactured in a FDA registered facility.

材料: 矽膠，ABS， 金屬球

尺寸: 最大直徑3.5厘米， 長19.8厘米
 
功能: 藝妓球，又名縮陰球，是用來輔助凱格爾練習的有效器具。通過凱格爾練習可以刺激生殖器區，增加該區域血液流量，提高陰部肌肉收縮能力，改善性功能。

使用方法：

建議配合水溶性潤滑劑使用。

在家練習可放一個球在陰道內，通過瑜珈，跳舞，散步，讓縮陰球在體內運動起來。

如果出去逛街散步或跑步，兩個同時放裡面，效果更佳。

注意事項：

初次使用，開始運動時，您也許覺得球體向外滑出，請無須擔心，堅持每天使用，肌肉會越來越緊實，您能感覺到身體控制球體越來越輕鬆。

初次使用者，請首次試用10分鐘，以後每天增加3分鐘，一直到30分鐘為止。鍛煉需要循序漸進才有成效。

若首次使用時間過長，第二天會出現小腹肌肉疼痛的現象，這是自然生理現象，主要因肌肉長期未鍛煉後進行大強度鍛煉所致。