Supercharge the cushion in your everyday trainer with Spenco® Propel™ insoles featuring INergy™ Foam technology. Experience a lighter, more durable insole that provides superior energy return versus the standard insole.
12X Greater Energy Return giving you a feeling of extra bounce in each step
2X More Durable for mile after mile cushioning in any shoe
20% Lighter for a lightweight supportive feel while gliding down the road