Callaway 1/4 Zip Chest Stripe Wind Jackets: The 1/4 Zip Chest Stripe Wind Jackets a new range from the collection and featuring Opti-Repel technology. Opti-Repel offer tremendous all weather protection, premium wind and water resistance provides the wearer with an ultimate barrier against the elements. 1/4 Zip Chest Stripe Wind Jackets also incorporate Opti-Stretch this technology allows layers of interwoven Spandex to produce ultimate stretch and provide the wearer with full freedom of movement and exceptional comfort.