The Rays Stretch vent is designed for upmost comfort on your summer trips. The light nylon fabirc has super stretch properties and goes freely with you, whatever move you make. With the warmer weather in mind, Jack Wolfskin have used a fabric with UPF 50+ sun protection, the highest protective level against the sun's harmful rays. For those warm days, ventilation is important and strategically placed ventilation slits are a warm welcome, allowing vital air to reach exactly where it is needed. When on the go, Jack Wolfskin also see the difficulty of a good washing routine, understanding that drying clothing is always a challenge. The Rays Stretch Vent Shirt therefore features incredibly fast drying properties, even when soaked. Another great feature is its stay fresh fabric, allowing it to be worn over and over again without kicking up a smell.