Discover the ultimate combination of shock absorption and energy return with Spenco Polysorb Cross Trainer Athletic Insoles. Perfect for runners and walkers, these premium cross trainer insoles provide elite-level cushioning and targeted heel shock absorption for pain free physical activities. The lightweight Polysorb polyurethane foam shoe inserts offer unbeatable arch support and stability, far superior to plastic cage shoe inserts, while the patented SpenCore material absorbs shocks and impacts to keep your joints and lower body muscles comfortable and primed for action. The deep heel cup and heel pad provide extra shock protection, making them ideal for sporting activities and extended use. The 4-way stretch fabric conforms to the foot’s contours, preventing blisters and discomfort, while the low-friction top cloth ensures your feet stay fresh and odor-free. Plus, the big toe cut-out preserves your foot's natural function to ensure efficient and powerful toe-offs with every step. Spenco Polysorb Cross Trainer Athletic Insoles are designed to fit your entire shoe last, ensuring complete end-to-end comfort and support. Use them for your at-home workouts, walks, runs, or any physical activity and say goodbye to sore, tired feet, blisters, and pressure sores.