Sale of Footwear by Subscription

A user enters into a subscription to receive footwear having one or more specified performance characteristics. As the user finishes wearing one set of footwear, the user can obtain a replacement set of footwear that also will have one or more specified performance characteristics. The performance characteristics may be consistent for each set of footwear provided according to the subscription. Alternately, the footwear performance characteristics may vary over the life of the subscription. Thus, the footwear provider may periodically obtain biometric information describing the user's athletic activities or performance. The footwear provider then can tailor the performance characteristics of footwear provided under the subscription to match the user's athletic activities or performance.