Specifications include, but are not limited to: Group One: Cotton and Polyester T-Shirts Group Two: Cotton Long Sleeve T-Shirts Group Three: Polyester Polo Shirts Group Four: Cool and Dry Shirts Group Five: Heavy Fabric Hooded and Crew Shirts; Cotton T-Shirts-Adult Ultra Cotton T-Shirt Short Sleeve 100% Preshrunk Cotton Jersey, White 6.0 oz fabric, double-needle sleeves and hems, seamless collar, 1” rib crew neck (+/-5%). Sizes: S-XL Gildan 2000 or equivalent ; Adult Ultra Cotton T-Shirt Short Sleeve 100% Preshrunk Cotton Jersey, White 6.0 oz fabric, double-needle sleeves and hems, seamless collar, 1” rib crew neck (+/-5%). Sizes: 3XL Gildan 2000 or equivalent ; Adult Ultra Cotton T-Shirt Short Sleeve 100% Preshrunk Cotton Jersey, Various Colors, 6.0 oz fabric, double-needle sleeves and hems, seamless collar, 1” rib crew neck (+/-5%). Sizes: S-XL Gildan 2000 or equivalent.