PRE-SALE (STARTS SHIPPING WITHIN 2 WEEKS) Sometimes we need to take a hard look at ourselves and realize a difficult truth. We’re our own worst enemy. There is a fine line between beating yourself up and taking proper accountability. Our negative self talk isn’t making us any better. Neither is the self sabotage. We hold ourselves back in many hidden ways and maybe it is time to be our own biggest champion. To actualize our full potential. Time to turn that enemy into your best workout partner.   Keep in mind the MAJOR difference in sizing is just the length (most tank sizes in the chest area fit pretty similar). At 5'10 and 180lb, I wear a size Large.I would say the following sizes would work as a rule.If you are below 5'4 (or female) get SmallIf you are between 5'5'-5'10 (and/or a small or medium build) get MediumIf you are between 5'7-5'11 (and/or a medium+ build) get LargeIf you are between 5'9-6'1 (and/or have quite a lot of muscle) get X-LargeIf you are 6'0+ (until maximum height 6'5) get XXLWomen should wear the S or M. Most guys are either M or L (or if you are jacked/are taller, XL). Personally I like to wear the L or XL (whereas for t-shirts I usually wear a M or for leg day a L).Made of 88% Polyester, 8% Raylon, 4% Spandex. Machine wash on cold.