The Salming Race helps you to get the most out of your preparations and really allows your biomechanical mechanisms to function at their best. Salming Rule of 5 – Product Design Framework Light – Weight reduction: running efficiency improves approximately 3-4% per 100g. A lighter weight will cut minutes away from your PB on a half marathon! Flexible – Mimics barefoot running. The shoe strengthens biological structures with a very flexible forefoot. Flat – A low heel-to-toe drop facilitates a correct foot landing and keeps you balanced with gravity. Thin – Improves sensory feedback from the feet to the brain (Proprioception). Makes use of your body’s natural cushioning system. Comfortable – Anatomical fit, breathable upper and a roomy toe box provide the ultimate in comfort. Our lightest shoes feature a 2 layer upper construction which adds durability while keeping the weight at a minimum.