Nike Women's Pegasus 42 phase out Optical Heart Rate Hardware -

Optical Heart Rate Hardware - 5 LED lights with 4 photodetectors

This 6” x 12” calf stretcher provides a serious stretch to foot arches

yet durable quick-dry fabric plus a breathable air mesh interior that guarantees superior comfort

Updated DriLayer® Threshold fabric in the women's Momentum thermal tight is warmer than before

19% Mohair

Nike Women's Pegasus 42 phase out Optical Heart Rate Hardware -Responsive full length cushioning sculpted to energize an icon. Responsive cushioning in the Nike Women's Pegasus 42 provides an energized ride for everyday road runs. Experience power in every stride thanks to the propulsive feel of a curved, full length Air Zoom unit and a ReactX foam midsole. An updated fit gives you more space in the forefoot and toe box. Full Length Air Zoom Unit Nike sculpted a full length Air Zoom unit to deliver a propulsive