Saucony Endorphin Pro 4 - White - 9.5 UK

These shoes are specifically engineered for competitive and demanding runners who prioritize speed, efficiency, and reduced fatigue during long-distance races, marathons, and high-intensity training sessions.

The Endorphin Pro 4 combines an integrated carbon fibre plate for superior propulsion, a dual-density PWRRUN HG and PWRRUN PB foam midsole for optimal cushioning and energy return, and Speedroll technology for a smooth, forward-rolling stride. These elements work together to maximize metabolic efficiency and speed.

While highly responsive, the Endorphin Pro 4 is primarily a race-day and speed-training shoe. For everyday, easy runs, you might find a less aggressive, more cushioned trainer from Saucony to be more comfortable and durable for higher mileage. Using these solely for performance will extend their optimal lifespan.

To clean, gently hand wash with mild soap (like dish soap) and cold water using a soft brush or cloth. Allow them to air dry completely at room temperature, away from direct heat or sunlight. Do not machine wash or put them in a dryer as this can damage the materials and structure.

Saucony running shoes generally fit true to size for most runners. However, fit can vary slightly based on individual foot shape. It's always recommended to try them on to ensure the best fit, especially considering the performance-oriented design that requires a snug but comfortable feel.

The Endorphin Pro 4 features advancements including the fusion of PWRRUN HG and PWRRUN PB foams in the midsole for an optimized balance of cushioning and responsiveness, an updated upper for enhanced breathability and a secure fit, and refinements to the Speedroll geometry for an even smoother transition. It builds upon its predecessors with improved materials and design.

Adjust lacing to ensure a more secure fit. Try using all eyelets, including the extra top eyelet if available, for a 'runner's knot' which provides better heel lockdown. Ensure your socks are not too thin, which can contribute to slippage.

Check your sock choice; thicker or different material socks can sometimes resolve minor rubbing. Re-evaluate your lacing; sometimes too tight a lace can cause pressure points. If the issue persists, ensure the shoe size is correct and consider if your foot shape is truly compatible with the shoe's last.

Running shoes, especially performance-oriented ones, have a lifespan. Reduced responsiveness often indicates the cushioning and carbon plate are losing their elasticity. Consider the mileage you've put on the shoes; typically, performance shoes last between 300-500 miles. It might be time for a new pair.