Asics Magic Speed 5 Shoes (Unisex) Size (US M):6 20 days of battery life

20 days of battery life with continuous use and sleep tracking

reducing fatigue and keeping your pace steady mile after mile

The reinforced aluminum heel unit enhances power transfer for a durable partnership

the original classic

Asics Magic Speed 5 Shoes (Unisex) Size (US M):6 20 days of battery lifeThe Magic Speed 5 is a significant course correction from the 4. Where that shoe went wide with a 43. 5mm stack and ended up stranded between a daily trainer and a race shoe, the 5 drops 6mm in the heel and 5mm in the forefoot, sheds 49g, and comes back to what the Magic Speed line was supposed to be: a lightweight carbon trainer that sits one tier below the Metaspeed race shoes and earns its place in a rotation between hard workout days and race day.