"Tubular" means that the body of the shirt is one piece, as opposed to side seamed.
"Jersey" is the common term used for t-shirt fabric. Polo shirts are commonly known as "Knits" and button downs are commonly known as "Wovens."
"30/1," or also known as "30 singles" refers to the tightness of the weave of the fabric. The higher the number, the tighter the weave and that typically makes for a softer and/or thinner shirt. A standard 6.1 oz t-shirt is usually 18 or 20 single. Premium or fashion fit 4 oz shirts are typically 30 or 40 single.
For info on "combed" and "ring spun," use the search feature. Here's on I found, but there are plenty more with really good info and descriptions. http://www.t-shirtforums.com/t-shirt-tag-relabeling-finishing/t6378.html#post41171
"Jersey" is the common term used for t-shirt fabric. Polo shirts are commonly known as "Knits" and button downs are commonly known as "Wovens."
"30/1," or also known as "30 singles" refers to the tightness of the weave of the fabric. The higher the number, the tighter the weave and that typically makes for a softer and/or thinner shirt. A standard 6.1 oz t-shirt is usually 18 or 20 single. Premium or fashion fit 4 oz shirts are typically 30 or 40 single.
For info on "combed" and "ring spun," use the search feature. Here's on I found, but there are plenty more with really good info and descriptions. http://www.t-shirtforums.com/t-shirt-tag-relabeling-finishing/t6378.html#post41171