Rubber sole Molding around the heel keeps you secure so you can focus on your route. Increased rubber at the outsole helps deliver traction and durability. Molding around the heel keeps you feeling secure so you can focus on your route. Increased rubber at the outsole helps deliver better traction and durability. The Nike React Phantom Run Flyknit 2 "Black/White" Women's Running Shoe is all about versatility for the everyday runner. The shoe expands on its laceless design by adding secure comfort that feels like it disappears on your foot. More foam means better cushioning keeping you comfortable as you run.