Builds fast-twitch muscle fiber in the lower leg. Includes Training Manual and DVD/CD-ROM. Sizes: M 8-10 1/2; L 11-14 1/2; XL 15-20.For ages 12 and up or at least size 5 shoe. The item "Basketball Speed Vertical Leap Slam Dunk High Jump Explosive Fast Jumpsoles MED" is in sale since Wednesday, October 07, 2015. This item is in the category "Sporting Goods\Team Sports\Basketball\Training Aids". The seller is "academybooksdvdsllc" and is located in Tampa, Florida. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, ZA, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, PH, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, TR, BR, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM.