CAYL Nicetime Mountain Gallery CAYL Alpha Cap Grey Ice [] CAYL() Aquax Cap fazeone [] CAYL() Aquax Cap fazeone. The Alpha Cap from CAYL is a performance cap designed for those baltic winter morning excursions. Equally adept when deployed for running, climbing or rambling, the five panel style utilises Polartec Alpha fleece for enhanced heat retention, and features foldable earflaps to further enhance those heat hoarding credentials.