The meaning of GA is 'Go Ahead' that is when Deaf and Hard of hearing often uses when they go on relay service on TTY.
They often use that every time they finish part of their conversation and stay on line so the next person can take turn to respond.
Unisex
Stone Blue colour
Orchid colour
Regular fit
Crew neck, stone wash finish with a worn look
Light weight, 140 GSM, 32-Singles
100% combed cotton
Neck ribbing, side seamed, shoulder to shoulder tape, double needle hems, preshrunk to minimise shrinkage