The Observer Effect Men's UPF Top

The Observer Effect inspired by quantum physics. 

Looking for an action top that is made to order, sustainable, and uses premium materials? Look no further than UPF action shirt. Our long-sleeve rash guard is hand cut and sewn with eco friendly vegan inks, making it perfect for sports or any other outdoor activity. With a slim fit and flat ergonomic seams, this rash guard will keep you comfortable while providing protection from the sun, wind, sand, and other elements.

• 82% polyester, 18% spandex
• 38-40 UPF
• Fitted design
• Comfortable long body and sleeves
• Flatseam and coverstitch
• Very soft four-way stretch fabric that stretches and recovers on the cross and lengthwise grains

Size guide