C1 Fitness sticks by its motto: “Fitness is motion and motion is life.” The O’Fallon Illinois gym focuses on creating sustainable fitness programs that keep its members challenged and constantly moving in a safe and nurturing environment.  C1 Fitness realizes the uniqueness of each member and the coaches are dedicated to helping you achieve your goals, no matter what they might be. At C1 Fit, you’re not just a member, you’re family and they strive to take care of family while working to get you healthier and happier.


• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz/yd² (142 g/m²)
• Pre-shrunk fabric
• Side-seamed construction
• Shoulder-to-shoulder taping
• Blank product sourced from Guatemala, Nicaragua, Mexico, Honduras, or the US

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!

Size guide

  LENGTH (inches) WIDTH (inches) CHEST (inches)
XS 27 16 ½ 31-34
S 28 18 34-37
M 29 20 38-41
L 30 22 42-45
XL 31 24 46-49
2XL 32 26 50-53
3XL 33 28 54-57
4XL 34 30 58-61
5XL 35 31 62-65