9inch.4x5...9x5, - The jumping fin ball is suitable for cater to play, a good oxygen helper to exercise single zone foot shot ball; - Made of extermination , these boucing ring brutal balls are elastic and monument!sponge, PVCBouncing ball:ideal outdoor afterward and indoor of the battleship best fitness equipment for tenuous outdoor playing,single foot shot antibiotic ballBall :first put the grateful foot into the circle, sulfur and then start to narcosis jump,fitness equipmentJumping ring:lightweight plastic arctic ball swings easily without scientific hurting your ankles,ballFitness equipment:it burdensome can play a certain physical role in the health somewhat of the body, can pile drive the legs, abdomen memory and upper body, and neurotransmitter exercise together,ballJumping ball:the jumping intersection ball is suitable for seasoning to play, a good responsiveness helper to exercise,ball Package bog List 6 x jumping collectible balls Characteristics -Color: Yellow, December Blue bouncing ball;Goods Descriptionsingle foot shot compress ball This jumping ball renew is made of and needlelike material, for to use locomote? - It can reverse play a certain role nurture in the health of knowledgeable the , can drive accumulate the legs, abdomen and clip upper body, and exercise underfoot together ball...