These polos were made to be similar to the RHOBACK brand
 
92% polyester, 8% spandex
Self-collar that keeps its shape and prevents "bacon collar"
Moisture-wicking, four-way stretch and breathable performance fabric
Sun protection (Excellent - UPF 40-50+)
Sharp comfort fit
Designed to transition throughout the day
Tagless
Low maintenance (machine wash cold, tumble dry)