The new Gel-Noosa Tri 10 blasts you into action with fun new features. Upper has seamless construction and glow-in-the dark print. Rearfoot Gel Cushioning System and a Reinforced Stitched Toe ensure comfort and durability that is sure to keep step with the speediest of young runners. Propulsion Trusstic System® makes transition from foot strike to toe-off quick and efficient, allowing explosive acceleration. Removable sockliner. American Podiatric Medical Association (APMA) Seal of Acceptance.