Experience unrestricted movement and a boost of motivation in our "Keep It Up" muscle shirt. Crafted for comfort and designed to uplift, this tank delivers a simple yet powerful message of positive reinforcement. Wear it during your toughest sets or your most challenging runs, knowing you've got this – just keep it up!
Key Features:
• 100% airlume combed ring-spun cotton
• 32 singles
• Relaxed fit
• Side-seamed construction
• Wide, low-cut armholes
Key Features:
• 100% airlume combed ring-spun cotton
• 32 singles
• Relaxed fit
• Side-seamed construction
• Wide, low-cut armholes
Size guide
| SHIRT WIDTH (inches) | SHIRT LENGTH (inches) | CHEST TO FIT (inches) | |
| S | 18 | 26 | 34-37 |
| M | 20 | 27 | 38-41 |
| L | 21 5/8 | 28 | 42-45 |
| XL | 23 5/8 | 29 | 46-49 |
| 2XL | 25 5/8 | 30 | 50-53 |
Experience unrestricted movement and a boost of motivation in our "Keep It Up" muscle shirt. Crafted for comfort and designed to uplift, this tank delivers a simple yet powerful message of positive reinforcement. Wear it during your toughest sets or your most challenging runs, knowing you've got this – just keep it up!
Key Features:
• 100% airlume combed ring-spun cotton
• 32 singles
• Relaxed fit
• Side-seamed construction
• Wide, low-cut armholes
Key Features:
• 100% airlume combed ring-spun cotton
• 32 singles
• Relaxed fit
• Side-seamed construction
• Wide, low-cut armholes
Size guide
| SHIRT WIDTH (inches) | SHIRT LENGTH (inches) | CHEST TO FIT (inches) | |
| S | 18 | 26 | 34-37 |
| M | 20 | 27 | 38-41 |
| L | 21 5/8 | 28 | 42-45 |
| XL | 23 5/8 | 29 | 46-49 |
| 2XL | 25 5/8 | 30 | 50-53 |