Brooks Ghost Amp electronics If your Costa eyewear has

If your Costa eyewear has a defect in materials or workmanship

breathable design

Nathan VaporAir 2 7L

Finished with branded eyelets and a drawcord

Updated cage construction for better midfoot lockdown

Brooks Ghost Amp electronics If your Costa eyewear hasFeatures: DNA Hype Midsole: Brooks' Peba blended midsole foam at a 36C durometer that delivers comfortable landings and a responsive forefoot a key highlight of the Ghost AMP that balances plush cushioning with energy return SpringRamp Technology: A propulsive geometry built into the Ghost AMP's midsole that encourages a more energetic toe off useful on tempo days when you want a little extra snap in your stride Knockout Strobel Construction: Brings