Wilson RF Practice Bag 6 Pack - BlackOverview The Wilson RF Backpack brings ease to training and travel days. The design is inspired from the majestic Swiss Alps, a theme that echoes across the Roger Federer collection. This pinstripe bag offers enough space for up to six rackets along with a shoe compartment, internal accessory pockets and two external accessory pockets for small valuables. An RF logo and RF detailed zipper pulls honor the 20 time major champion.