The Observer Effect Men's Rash Guard

The Observer Effect inspired by quantum physics. 

Looking for a rash guard 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