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 vs. the stock insole from a leading shoe brand, giving you a feeling of extra bounce in each step
2X More Durable INergy Foam for mile after mile cushioning in any shoe (vs. EVA Foam)
20% Lighter for a lightweight supportive feel while gliding down the road (INergy¢ foam vs. TPU foam)
