These are high-quality 6.1 oz., 100% ringspun cotton T-shirts by Comfort Colors because we all hate cheap, uncomfortable shirts. These ones won't shrink. Designed by lead singer James VanDeuson. Each custom tie-dyed by Rebecca Girouard. 
 
Features
6.1 oz., 100% ringspun cotton
Preshrunk, soft-washed, garment-dyed fabric
1" ribbed collar with double-needle topstitched neckline
Double-needle stitched sleeves and bottom hem
Twill taped shoulder-to-shoulder
Set-in sleeves