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Some Nike Terms Defined about Nike Running Shoes

Roman Numerals (example II or IV): this normally denotes what version of the shoe they are on, so II would be the 2nd generation while IV is the 4th generation
V4: Just when we figured out roman numerals are version numbers they throw in “V’s” too. The “V” stands for “version.” So V4 is the fourth version of the shoe. Why they aren’t consistent and use either “V’s” or Roman numerals I have no idea. It’s Nike they can do whatever they want apparently.
iD: This is short for identification in the normal world, but in Nike world it is short for NikeID. A system where they allow you to customize your shoes materials and colors. So choose that have this suffix allow you to customize them.
+: The plus sign here doesn’t not mean “addition” like it does in the normal world (nor is it a part of an equation, Everyday + 2 = x), here it is short for the Nike + (plus) tracking system. This means the shoe has room for you to insert their Nike + sensor into the shoe which will allow you to track how far/fast you run with your iPod. Unfortunately, the sensor is not included with the shoe.

Nike initially launched the Nike Free shoe line with the intention of using a 0.0 to 10.0 scale to denote how “barefoot” a shoe is. Zero (or 0.0) is technically barefoot and a 10.0 is a traditional athletic shoe. Using this scale it makes more sense now when they have Nike Free 3.0′s, 5.0′s, and 7.0′s. As the numbers increase the amount of traditional shoe support increases. Nike Free shoes only come in 3.0, 5.0, and 7.0 flavors. For people looking for a more barefoot running experience (think Vibram FiveFingers) then the Nike Free 3.0 probably makes the most sense. For people who want to slowly transition into barefoot running by building up foot strength that where the Nike Free 5.0 or 7.0 makes sense.

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