GASP Inc. thermal is a thermal sweater with a regular to tight fit! A light weight sweater in thermal structure with lots of flexibility and seriously comfortable! Prints on both arms as well as over delts and traps area! We have also added a yoke stitch in from and back with great GASP feeling! Quality: 60% cotton, 40% polyester. Fit: It´s sized to have a regular to tight fit. The fabric is very flexible and if you are a big dude, loaded with muscles and get your normal GASP size, you will get a tight fit and look like a really cool freak!