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Check it — your progress, your power, your purpose.
The “Just Check It” tee is a clean reminder to stay accountable to the grind. Built with the signature REPS & SETS bold typography and a yellow checkmark icon, this design blends the lab’s precision with the lifter’s mindset: test, measure, and improve.
• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz/yd² (142 g/m²)
• Pre-shrunk for consistent fit
• Side-seamed construction for lasting structure
• Shoulder-to-shoulder taping
• Printed & finished in the Muscle Lab
💡 **Lab Notes**
When the reps get real, check yourself — and keep moving forward.
**Perfect For:**
• Goal-driven athletes
• Training sessions and gym fits
• Everyday wear with a performance edge
**Brand:**
REPS & SETS PERFORMANCE LABS®
Southland Muscle Research Division — Where Strength Meets Science.
CHECK IT TEE | REPS & SETS PERFORMANCE LABS®
$29.50
The “Just Check It” tee is a clean reminder to stay accountable to the grind. Built with the signature REPS & SETS bold typography and a yellow checkmark icon, this design blends the lab’s precision with the lifter’s mindset: test, measure, and improve.
• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz/yd² (142 g/m²)
• Pre-shrunk for consistent fit
• Side-seamed construction for lasting structure
• Shoulder-to-shoulder taping
• Printed & finished in the Muscle Lab
💡 **Lab Notes**
When the reps get real, check yourself — and keep moving forward.
**Perfect For:**
• Goal-driven athletes
• Training sessions and gym fits
• Everyday wear with a performance edge
**Brand:**
REPS & SETS PERFORMANCE LABS®
Southland Muscle Research Division — Where Strength Meets Science.