Womens Saucony Peregrine 16 (B-Width) Headwear Optical heart rate sensors work

Optical heart rate sensors work by using light to measure blood flow in capillaries beneath the skin

or moving through high-intensity exercises

Whether you’re cooling down after a long run

ensuring a smooth ride on hard surfaces like roads or tracks

prevents energy leakage

Womens Saucony Peregrine 16 (B-Width) Headwear Optical heart rate sensors workBuilt for runners and walkers who love to explore beyond the pavement, the Peregrine 16 is a high performance trail shoe designed to tackle everything from local bush tracks to rugged mountain trails. Whether youre hiking steady kilometres or running technical singletrack, this shoe delivers the grip, protection and responsiveness you need to move with confidence on unpredictable terrain. Underfoot, the Peregrine 16 features aggressive 4mm VIBRAM