Foundation Baselayer Long Sleeve T-Shirt
Foundation Baselayer Long Sleeve T-Shirt
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Built for those who are committed to the process.
The Foundation Baselayer Long Sleeve T-Shirt is designed to enhance your physique while giving you the comfort and freedom to train at your best. Featuring a fitted athletic cut that follows your natural shape without restricting movement, it creates a powerful silhouette while remaining comfortable through every session.
Made with a lightweight, breathable stretch fabric, the Foundation Baselayer keeps you comfortable during intense workouts, conditioning, and everyday wear. The long sleeve design provides extra coverage while maintaining the sleek, performance-focused look Series XI is built around.
Whether you're chasing a new personal record, pushing through another training session, or building your everyday gym fit, the Foundation Baselayer is made to be the piece you reach for every time.
Features
- Athletic fitted design to enhance your physique
- Lightweight, breathable stretch fabric
- Full range of motion for training
- Long sleeve construction for extra coverage
- Sweat-wicking material to keep you comfortable
- Designed for gym, sport, and everyday wear
- Series XI signature performance aesthetic
The foundation of every workout starts here.

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Sizing
Size:
XS: Chest: 94 cm (37 in) | Waist: 75 cm (29.5 in) | Hip: 93 cm (36.5 in)
S: Chest: 99 cm (39 in) | Waist: 80 cm (31.5 in) | Hip: 98 cm (38.5 in)
M: Chest: 104 cm (41 in) | Waist: 85 cm (33.5 in) | Hip: 103 cm (40.5 in)
L: Chest: 109 cm (43 in) | Waist: 90 cm (35.5 in) | Hip: 108 cm (42.5 in)
XL: Chest: 114 cm (45 in) | Waist: 95 cm (37.5 in) | Hip: 113 cm (44.5 in)
Materials & Care
- Made with the highest quality fabric
- Machine wash cold
- Do not tumble dry
- Do not iron directly on printed areas
Shipping
Shipping is calculated based on your location and the items in your order. You will always know the shipping price before you purchase.