This is a GS Stage 1 polo shirt embroidered on the left chest. 

Devon & Jones

• 5 oz./yd² / 172 gsm, 100% polyester face plaited to 60/40 polyester/cotton back (total overall garment 61/39 polyester/cotton)
• Proprietary dual-sided mesh pique knit constructed of fine denier wicking polyester on the outside and soft-as-cotton wicking blend on the inside
• Moisture-wicking performance
• UPF 15-39 protection
• Active fit
• Matching flat-knit collar with contrast double tipping
• Three-button placket
• Dyed-to-match buttons
• Side vents
• Easy care